How To Change IP Address From Another Computer

As network administrator, sometimes I need to change IP Addresses, Subnet Masks, Gateways and DNS to any client in my office. But I'm too lazy to walking across the room to change it at the front desk. Then I found a good method to do this job remotely from my computer.

All you need is PSTools a compilation of some useful tools to manage your client computer with Command prompt.

How to use :

Download PSTools and extract to anyplace you want. Then open command prompt on the folder.

PsExec is a light-weight telnet replacement that lets you execute processes on remote systems. You can use IP addresses or hostnames with PsExec. To launch an interactive command prompt on a remote computer, run the following command (you should run theses commands as domain admin):

psexec.exe \\ip_or_hostname cmd

If you are unable to connect to the remote system, it may have something to do with a firewall or antivirus on the remote system. Or also you need to type username and password to connect to client computer. As example :

psexec.exe \\ip_or_hostname -u username -p password cmd

Now that you have an interactive command prompt open on the remote system, we will be using the netsh command to change all the IP info. To find the name of the interface you would like to change, run this command:
netsh interface ip show config
Here are the commands to set or change an IP address, gateway, subnet mask, and DNS servers:
Set IP address, gateway, and subnet mask statically:

netsh interface ip set address name="Local Area Connection" static 192.168.1.34 255.255.255.0 192.168.1.254 1

Set IP address, gateway, and subnet mask to be received by DHCP (This will attempt to renew the IP info immediately after running this command):

netsh interface ip set address name="Local Area Connection" source=dhcp

To set a primary DNS server (if there are multiple DNS servers set prior, this will remove them):

netsh interface ip set dns "Local Area Connection" static 4.2.2.1

To set a secondary or additional DNS server:

netsh interface ip add dns "Local Area Connection" 8.8.8.8

To set the DNS servers to be received by DHCP (This will attempt to renew the DNS info immediately after running this command):

netsh interface ip set dns "Local Area Connection" source=dhcp

I hope this help you and feel free to comment if there is any questions.

Optimizing SAP Business One Performance

I get a new job as an Administrator SAP Business One. The first time I did was to optimize the performance of the server and make loading time faster. From the test results that I did, the time it takes to open the SAP database directly from the server only 7 seconds. Meanwhile, when I open it from the client computer takes approximately 3 minutes. I'm sure there are things that cause the connection from the client to the server is not running well. After looking at various sites on how to accelerate the SAP Business One client connections. I found the following tips:

• Refer to the Optimizing the SQL SAP Database.pdf you can find on the SAP Business One partner page and forum. 
• The communication between the Terminal Services server(s) or Citrix server(s) and the SQL server should be at minimum of 1gig. You can purchase an inexpensive Dell 3-4 port 1gig hub or equivalent for around $200.00 and install it on the Business One server(s) and see a huge increase in performance. 
• Create a .BAT file and put it in the startup for the Citrix or Terminal Server servers to delete .TMP files in the %userprofile%\local settings\temp folder at startup. 
• Make sure all SQL queries, as well as any other remote access to the database, use the (NOLOCK) command next to each table accessed, otherwise it accesses the tables with a share lock. You could easily be locking thousands of records and pages of the database without this. 
• Microsoft Windows does not do a good job of freeing up memory, improper log-out’s, etc. Re-booting Microsoft servers at a minimum of once per week is important. 
• Antivirus software on the SAP Business One related servers: Don’t check and download the latest updates and virus definition files during the day, do it at night only. Do not do system scans during the day, maybe do the full scans at night. The real time scans need to be scaled back so it doesn’t include the SAP Business One executable files as well as Microsoft SQL programs. Consider stopping the real time scanning for an afternoon and see how your performance is effected. Note: if a MS-SQL database get’s infected with a virus, which I’ve never seen yet, you have to restore the database anyway. 
• Review your work station antivirus scanning and updates also. If they are running during the day, these scans or updates on the work station give the impression that SAP Business One is slow but in reality it is the work station causing the slowness. 
• Identify all software that is running on the SAP Business One servers. Only install and run what is really needed. The SQL server shouldn’t have much running on it, besides SQL and MS-Fax. 
• Review the event logs daily or as often as needed to verify proper setup and installation. 
• Review the SAP Business One and SQL Service Backup schedules. Typically we recommend these backups occur at 6am, 7pm, and perhaps lunch. These backups will typically slow the system down so trade off’s have to be evaluated. 
• Backups to tape will also affect performance while running. Typically we recommend that client’s perform backup’s to tape while users are not on the system or if you run 24×7 when the user count as at the lowest. Review all Microsoft Windows performance logs to make sure there are no issues that require correction. 
• Setup and auto-run SQL database maintenance jobs each night. 
• Run Raid 1 or Raid 10 on the disks that the databases are on. Raid 5 is one of the slowest configurations for just about any ERP or Business Management database, due to the added disk I/O for additions, updates and deletes. It just isn’t necessary and is not worth the negative hit on performance. 
• In summary, you need to look at hardware, the network and other software that is running, just as much as you are looking at the database server and the business software. Unfortunately, when the business software is “slow”, the users think that is the problem, when in fact, a lot of the time it is other software and configurations that are the true problem.

Source : SAP-B1

Setting up RAID on Home PC Windows

Most people know that RAID technology is only found on computer servers. But do you know if we can also use it on your home computer. The advantages of RAID technology is reducing the risk of losing existing data on your PC when the damage occurred. If you are a professional who works at home, of course, the data on your disk is a very valuable asset.

What type of RAID do I want?

RAID comes in a number of flavors--or levels--that offer data protection, enhanced performance, or both. In addition to the seven core levels (RAID 0 through RAID 6), you'll encounter a number of variants and combinations. Some controllers (and dedicated external storage and NAS boxes) can layer and even abstract RAID levels, allowing you to mix and match different capacity drives and add capacity without any additional configuration.

Here are a few of the RAID levels you'll find on affordable, consumer-level RAID adapters, motherboard chipsets, and Windows software RAID:

JBOD (extend, spill over): JBOD, or Just a Bunch Of Disks simply allows you to extend a volume (drive letter, e.g. C:\) onto other disks. Data is written to the first disk until it's full, then to the second disk, then the third, etc. It offers no boost in performance or redundancy and is a holdover from the days when smaller disks had to be chained to handle large amounts of data. It's largely irrelevant given today's more capacious hard drives.

RAID 0 (Striping): This setup increases hard-drive performance by splitting, or striping, data across two drives. By leveraging two data busses, data can be read and written more quickly. Unfortunately, RAID 0 provides no data protection--in fact, it actually increases the chances of data loss since the failure of either drive in the array results in the loss of the data stored on both drives. RAID 0 setups are standard on high-end gaming PCs and graphic design workstations, and provide a measurable, albeit modest performance boost for hard-disk-intensive programs.

RAID 1 (Mirroring): A RAID 1 setup protects data from drive failure by simultaneously writing the same data to two hard drives. Since each drive is an exact duplicate of the other, you can continue working if one fails. RAID 1 offers no gain in performance and effectively reduces available capacity by half -- two 2TB drives provide only 2TB of storage.

RAID 5 (Distributed Parity): Though you get both faster disk performance and data protection from this setup, it requires a minimum of three hard drives. Instead of using an entire hard drive as a backup, RAID 5 spreads redundancy information--called parity bits--across all of the array's drives. Where RAID 1 requires 50% of available storage for redundancy, RAID 5 requires only 33%.

When one of the drives in a RAID 5 array fails, the data content of that failed drive is reconstructed using the parity bits on the surviving drives and written to a new, replacement drive. The array is still usable in the meantime.

RAID 1+0, 0+1, 10: Some adapters combine (referred to as nesting) RAID 0 and RAID 1 to provide both data redundancy and increased disk performance. This works by either striping data across a pair of drives then mirroring (0+1) them with another pair, or striping data across two mirrored pairs (1+0, aka 10). RAID 0+1, 1+0, and 10 require a minimum of four hard drives.

What do I need to set up RAID?

A Fresh Backup (existing data only): If you're installing and configuring hardware RAID on a fresh system with no OS (your best option), or are adding disks for a separate array, skip this. Otherwise, back up your important data. Best practice is to have three copies of your data: the original, a backup, and a backup of the backup, preferably offsite.

If you have existing data that you want on the array, you'll need to back it up, then restore it from a backup you make before creating your array--a process that writes new data to your hard drives regardless of what's there. This is not necessary with Windows software RAID 0, however, it's far faster than letting Windows re-sync (copy the data to) the mirror in the background.

Transferring an existing operating system is tricky, and with older versions of Windows, sometimes impossible. See "Transferring Existing Windows Installations to RAID" on the next page for instructions.

Windows Software RAID: Starting with Windows XP, Microsoft integrated RAID functionality into its operating systems. What type depends on the flavor of Windows:

• Windows XP allows spanned volumes (one volume over two or more disks), aka JBOD.
• Windows Vista Ultimate allows JBOD and RAID 1 striping.
• Windows 7 Home allows JBOD and RAID 1 while Professional and Ultimate add RAID 0 mirroring. Windows 2000 Professional also has JBOD, 0, and 1.
• Windows Server operating systems from 2000 on have JBOD, 0, 1, plus support for RAID 5 distributed parity.

Windows RAID offers several advantages. You can create arrays from within Window Drive manager so there's no BIOS to configure. It's also more flexible with mirrors, allowing you to create them from existing volumes containing data, as well as delete either half of a mirror with the other remaining intact. You can mirror individual partitions, including partitions from different drives onto a single drive.

The disadvantages are that other operating systems, such as the Linux used on repair discs, can't see Windows software RAID partitions which use Microsoft's dynamic disk technology. Also, maintenance performed by Windows when it feels it's needed, which can occur any time there's a configuration change, hurts performance while in progress. Restoring mirrors isn't as dead simple as it is with a hardware solution either.

Though you'll see a lot of talk about hardware RAID being faster, this discussion predates modern CPUs which can easily handle the overhead. Windows RAID is actually quite fast.

RAID controller: If you don't use software RAID, there's hardware. You probably already have a RAID controller in your PC; many older midrange and high-end motherboards come with secondary RAID controller, and newer motherboard chipsets offer integrated RAID obviating the need for an additional controller. Check your PC or motherboard documentation to find out if your motherboard supports RAID (and if so, which levels), and for specific installation instructions.

If your PC doesn't have integrated RAID, you may use an adapter card. Basic PCI and PCIe adapters supporting RAID levels 0, 1, 10, and sometimes 5 can be found online for $100 or less. Adaptec, Promise and other vendors offer a wide selection of pricier, but more capable RAID adapters with onboard cache and advanced features. If possible, buy a card that supports greater-than-2.2TB disks and 6Gbps SATA III.

Two or more hard drives: If you decide on Windows software RAID, you may use any drives you choose. They need not be the same size if you're mirroring individual volumes, though it's generally a good idea.

Back in the days of parallel ATA, it was a no-no to mix drives from different vendors on a RAID controller. Sometimes it would work--more often it wouldn't. With the advent of SATA, mixing vendors is no longer as problematic.

Also, though there are controllers that allow mixing and matching capacities without losing storage space (using advanced parity techniques), these are still relatively rare. Using drives of different sizes usually results in total storage capacity that's only a multiple of the smallest drive. For example, combining 500GB and 320GB drives in RAID 1 would be 320GB * 2, or 640GB instead of 820GB.

In practice, you'll save yourself a lot of time and sidestep possible issues by building your array with identical hard drives--meaning drives of the same make, model, and size. You need at least two drives for RAID 0 and 1, three drives for RAID 5, and four for RAID 0+1, 1+0, and 10.

Floppy drive (Windows XP-only): If you plan to install Windows XP on your new array, you will need a floppy disk with your RAID adapter's Windows drivers, and a floppy drive to read it--Windows' installation won't install the drivers from an optical drive. Thankfully, this incredibly annoying limitation of Windows XP doesn't apply in Windows Vista and Windows 7 which can read drivers from hard drives, flash drives, or optical media.

Tools: You'll need a small, non-magnetic Phillips screwdriver to remove and replace the fastener screw that secures the adapter card to the PC chassis, as well as to install any new hard drives. You might also want a simple grounding strap that attaches to your wrist; look for one at your local computer store for less than $15. Alternatively, never touch exposed contacts or electronics.

How do I install a RAID adapter?

Here's how to physically install a RAID adapter card in your PC. If your motherboard already supports RAID, skip to "Configuring the Adapter” below.

1. Unplug your PC and position the case so that you can comfortably reach into the interior. If you have a tower case, you'll find installing an expansion card easier if you lay the case on its side.
2. Protect your PC's delicate circuits from static electricity by properly grounding yourself. If you don't have the patience or time to buy a grounding strap, at least make an effort to ground your body by touching your PC's case before touching the inside of your PC or any component.
3. Locate an open PCI or PCI Express expansion slot and remove the cover bracket that blocks the slot's access port on the back of the case. Typically, a single screw secures the bracket.
4. Remove the adapter card from its packaging, handling the card by its edges (not the edge connector on the bottom); avoid touching the chips and circuitry on either face of the card.
5. Align the adapter card's connector with the expansion slot and gently but firmly push down on the top edge until the card is securely seated in the slot. Secure the card to the chassis with the existing screw or other clamping mechanism.
6. Once the card is installed, install and connect the hard drives to be used in the array. See "How to Install a New Hard Drive" for instructions.
7. Reassemble the PC and power it up.

Configuring the Adapter

Each RAID adapter has a firmware configuration program, unique to that make or model, that lets the user select the type of RAID array to install and choose which hard drives to include in the array. Sometimes the RAID functionality is embedded in the motherboard's BIOS. Refer to your adapter or motherboard documentation to guide you through the specific installation steps for your adapter.

Typically, you launch the setup program for a RAID adapter by pressing Ctrl-R, Ctrl-A, or some other key combination during the PC boot process. Watch the screen for a prompt, or check your adapter's documentation. On some PCs you may have to press the Tab key to see the boot messages and the prompt.
If RAID is embedded in the BIOS, as with many Intel motherboards, you will need to launch the BIOS setup. This is typically done by pressing F2, Ctrl+S, Del or some other key combination.
Choose the drives and create the array.
If asked to select a stripe size or chunk size for a RAID 0 or RAID 5 array, select the default size. Playing with these settings may increase performance for users with plenty of time and energy to experiment.
Installing Windows and the Adapter Drivers
If you are installing Windows XP or 2000 onto your array:

1. Carefully watch the bottom of the screen at the beginning of the setup process for the prompt, and press F6 if you need to install a third-party SCSI or RAID driver. Be quick: You have only a few seconds to press F6 and launch the installation process.
2. Wait for the screen that says 'S=Specify Additional Devices' in the lower-left corner. Press S.
3. When prompted, insert the floppy disk with the adapter's drivers into the floppy drive and complete the driver installation. Once that's done, Windows should continue the Windows installation routine.

If you are installing Windows Vista or Windows 7 onto your array:

1. Choose Custom (Advanced) Installation.
2. When asked where to install Windows, if your RAID volume does not appear (Windows Vista and 7 do have some RAID drivers) click the Load Driver button at the bottom of the dialog.
3. When prompted, insert the floppy disk, CD, or flash drive with the adapter's drivers and complete the driver installation. Once done, you should be able to see the drives attached to the RAID controller. If not, you may have pointed to the wrong driver or the array hasn't been created yet.

Transferring Existing Windows Installations to RAID
It can be difficult, and sometimes impossible to transfer an existing operating system installation to a RAID array. It all depends on the hardware and Windows operating system involved. Follow the steps below for the best chance of success.

Transferring Windows XP

1. Install or enable the RAID controller in your PC. Do NOT create any arrays.
2. Boot to Windows and install the RAID drivers. If your boot drive is attached to the RAID controller (some storage controllers such as Intel's Storage Matrix pull double-duty) you may not be able to boot. If that's the case, you'll either have to attach the boot drive to a non-RAID port or use a secondary RAID controller for the new array. Start over.
3. Create a backup image in a safe, accessible location (external hard drive, flash drive, hard drive not to be included in the array, etc.) of the entire hard drive containing the existing OS installation using Norton Ghost, Acronis True Image or another program. Preferably one with bare metal restore capabilities, i.e. driver support for hardware that wasn't in use when the image was made.
4. Reboot and create your array. Preferably, with new disks while keeping your old disk as a backup.
5. Restore the image using the program you created it with. If your system won't boot, try again using the bare metal restore functions.

Transferring Windows Vista or Windows 7

1. Create an image of the hard drive containing the existing OS installation in a safe, accessible location (external hard drive, flash drive, hard drive not to be included in the array, etc.) using Windows backup.
2. Reboot and enable/install the RAID adapter.
3. Create your array. Preferably, with new disks while keeping your old disk as a backup.
4. Boot using your Windows Vista/7 installation disc, and select Repair your computer.
5. Click on Load drivers and following the prompts, load the RAID drivers and any drivers required for the device you backed up to.
6. Restore your system using the backup image you previously created.

Using Windows software RAID
Windows XP, Vista, and 7 all offer software RAID which is a more than viable alternative to hardware, and easy to implement. Which levels are available with depend on your flavor of Windows

The basic procedure for implementing Windows RAID is as follows:

1. Open the Start Menu, right-click on Computer and select Manage.
2. Scroll down the tree on the right to Disk Management (under Storage) and click on it.
3. Right-click over the large drive icon to the left for operations that will affect the entire disk (extend, stripe, mirror, or RAID 5). Only what's available on your version and possible with your disk setup will be enabled. For some levels, a wizard will pop up. Follow the prompts. If the disk is not dynamic, this will automatically convert it.
4. On dynamic disks, right-click over a volume on the drive and you'll see an option to mirror that individual volume (Windows 7 Professional/Ultimate, Windows 2000 Professional, and Windows server OS's only).

Note: Depending on the amount of existing data, it can take an extremely long time for new Windows RAID mirrors to sync up, and disk performance will suffer till the process is completed. It's far faster to back up your files, create new mirrored volumes, then restore the data. If you do opt for letting Windows sync all the data, keeping Drive Manager open and on top will speed up the process.

Source : PCWorld

Installing Windows XP on Asus EeePC 1015BX

By default this netbook are bundled with Windows 7 Starter and or Asus ExpressGate OS. You can't find any driver on bundling CD available for Windows XP installation. I have been trying many OS on this netbook, from Windows 7 to some Linux Distros.

Windows 7 is the best option for this netbook, when the desktop running very smooth and responsive for your office application. But some games are not running well with this OS. I don't know exactly why, due to huge memory need while playing the game or because of DirectX 10 compatibility.

Then I try to installing Windows XP Professional to Asus EeePC 1015BX with all risk. This is not easy to find the XP driver for this netbook. I have to surf and search over the net and find compatible driver.

Here the steps to installing Windows XP on Asus EeePC 1015BX :

Preparation :
1. External USB Optical Drive/ DVD/ CD drive.
2. USB Flash Disk
3. Windows XP installation CD
4. Download XP driver listed the Section 2.

Section 1 :
1. Boot your netbook and goes to BIOS by pressing F2.
2. Set IDE setting to Native IDE
3. Choose your installation device boot priority.
4. Install XP just as usual.

Section 2 :
1. When installation was done, you need to install some driver.
2. ATI HD 6290 Driver, you can find the latest driver on official ATI AMD sites. Click here to go.
3. Realtek HD Audio, you can use driver from CD. That's compatilble with XP too.
4. For Wireless, LAN and other device, you can use skydriver to install the drivers. Download here.

When I'm using Windows 7 on my netbook, I was frustrated because I can't play my favorite Assassin's Creed 2. It's always force closed on Ubisoft logo. I think this netbook has not enough resource to play the game. But I amazed when using Windows XP Pro SP3, Assassin's Creed series was running well altough it run with poor FPS. But, with low setting graphics, I still can play this games.

Overclocking Asus EeePC 1015BX

Asus EeePC 1015BX is a cheap netbook with AMD APU C-60 with ATI HD 6290 graphic chipset. 2 GB RAM are soldered on mainboard so there is no chance to upgrade it.

By default the clock speed of C-60 is 1.0Ghz but this CPU has Turbocache which is can boost the speed automatically to 1.3Ghz when it load some heavy application. But I’m not satisfied with this speed when I need it to play a heavy game like Assassin’s Creed 2.

This is the CPU-Z result before and after overclocked :

I found a way to overclock this CPU with a software called Brazos tweaker. And I’m surprised, this low end processor can overclocked to 1.6 Ghz easily. Here I show you how to do it.

1. Download Brazos Tweaker here.
2. Set P0 State Mult = 2.5 VID = 1.0500, P1 State Mult = Default VID = 0.900, P2 State Mult = 8.0 VID = 0.75
3. Just leave the other set by default
4. Choose High Performance, Apply and reboot.

Now I can play my fave Assassin’s Series with better FPS. Enjoy.

USB Audio Detected But No Sound on Ubuntu (Solved)

After doing a fresh installation of Ubuntu 12:04, I did update and upgrade. Add some apps and tweaking in order to Ubuntu faster and more reliable.

But when it did restart, suddenly the sound was not heard again. I am trying to find the cause of this. Ensure that the USB Audio detected by Ubuntu using this command.

aplay -l

The output of the command is as follows:

**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: AUDIO [USB  AUDIO], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Indicates that the actual USB Audio is detected by the system. However, the system does not select it as the default audio. Then the my task is the revamp USB Audio as the main sound card on the computer. Here is how to change the default USB audio sound card.


1. Edit the file /etc/modprobe.d/alsa-base.conf . Since this is a system file you will need to sudo to get this done. e.g.

$sudo nano /etc/modprobe.d/alsa-base.conf

2. Scroll down to the end. Now you have to change the line which says

options snd-usb-audio index=-2

to

options snd-usb-audio index=-1

Reboot and it should work.

LinuxMint 14 RC (Nadia) on Asus EeePC 1015BX

I've been searching for good operating system for my little netbook Asus EeePC 1015BX. I try many OS on this machine from Windows 7, Ubuntu, PCLinuxOS and even Windows 8. But only Windows 7 which is make me comfort. Ubuntu 12 make my netbook was working so hard. Drained my battery and the system fan was always run on high speed. There is too much problem while I'm installing PCLinuxOS on it. And Windows 8 is not for netbook. I have a problem with screen resolution.

Then I saw on internet that LinuxMint was launch their latest software called Nadia. I try to install it on my Asus EeePC 1015BX and try it for a few days, I don't like live version. Installation progress is just like another linux distros, maybe it's take an hour or less to complete. But something surprise me when I have to make partition on my harddrive. Not like another distros which use a wizard for making partition. So you can let them decide how much partition you have to create. On LinuxMint, you need to decide it by yourself.

LinuxMint 14 running smooth on my Asus EeePC 1015BX. I have no serious problem until today. It's very fast and stable. I'm little bit worried with ATI Radeon chipset on this netbook. So I install the proprietary driver from AMD websites. And it's running well.

I will give you an update if there is a problem with this OS. 

Membuat Laptop Menjadi Hotspot

Berikut ini adalah beberapa cara untuk menjadikan laptop anda sebagai laptop atau Wireless Access Point. Sehingga anda bisa saling berbagi koneksi internet yang terhubung melalui modem GSM/CDMA atau dial up connection.

1. Connectify

Connectify adalah aplikasi untuk membuat virtual access point yang populer saat ini. Kemudahan konfigurasi dan kemampuannya untuk saling berhubungan dengan perangkat mobile lainnya sangat handal. Membuat Connectify disukai banyak orang. Namun sayangnya tidak tersedia opsi sharing internet pada versi gratis.

2. Bzeek

Bzeek adalah aplikasi serupa yang bisa membuat jaringan WiFi menggunakan laptop anda. Bzeek membuat laptop anda sebagai access point secara gratis. Ketika menggunakan Bzeek anda akan menemukan SSID dengan nama “Bzeek Free WiFi”.

3. Virtual Router

Virtual Router adalah aplikasi gratis yang sepenuhnya dibangun menggunakan bahasa C# yang bisa merubah Windows 7 atau Windows R2 Computer menajdi WiFi Hotspot. Aplikasi ini menggunakan sekuriti WPA2. Sayangnya Virtual Router ini masih dalam versi Beta.

4. mHotspot

mHospot merupakan aplikasi virtual hotspot gratis dan tidak memerlukan instalasi seperti aplikasi lainnya. Anda bisa saling berbagi koneksi internet dan kompatibel dengan berbagai macam gadget.

Itulah beberapa aplikasi yang bisa anda gunakan untuk merubah laptop anda menjadi wireless access point secara gratis. Sebenarnya masih banyak aplikasi dan cara-cara manual untuk merubah laptop untuk menjadi hotspot. Silahkan anda temukan cara yang menurut anda paling baik.

Picture is courtesy of xversailez.blogspot.com

Tweak Intel Graphics Netbook

Umumnya resolusi layar pada netbook adalah 1024 x 600, sementara kebanyakan games PC saat ini menggunakan resolusi minimal 1024 x 768. Seperti yang saya alami ketika mencoba menginstall The Sims 3 pada Netbook Asus 1005PX. Awalnya saya berpikir bahwa netbook ini tidak mampu menjalankan The Sims 3 karena keterbatasan hardware.

Asus EeePC 1005PX menggunakan Intel Atom 1.6 Ghz dengan memory bawaan 1 GB. Graphics card Intel GMA 3500 Series juga seharusnya cukup untuk menjalankan game ini.

Setelah mencari ke berbagai forum, ternyata keterbatasannya adalah resolusi yang tidak mendukung. Karena The Sims 3 membutuhkan minimal resolusi 1024 x 768.

Ternyata caranya cukup mudah untuk memaksa graphic card Intel untuk mencapai resolusi tersebut. Anda hanya perlu merubah registry pada Windows untuk memunculkan option pada pilihan resolusi.
Caranya adalah :

1. Buka Registry Editor dengan cara ketik regedit pada search box di Start Menu.
2. Tekan Ctrl F pada keyboard dan carilah key  “Display1_DownScalingSupported”
3. Dobel klik pada string dan rubah nilai 0 menjadi 1
4. tekan F3 untuk mencari key selanjutnya dan lakukan hal yang sama.
5. Tutup jendela regedit dan restart komputer.
6. Sekarang periksa pada pilihan resolusi layar dan pilih 1024 x 768.

Beberapa game yang membutuhkan resolusi 1024 x 768 akhirnya bisa saya jalankan. Cara ini juga berguna untuk memunculkan fungsi Metro UI pada Windows 8.

Kelemahan dari tweak ini, display pada netbook akan menjadi melebar (stretched). Namun itu tidak terlalu menjadi masalah jika anda tidak menggunakan netbook untuk menjalankan software yang membutuhkan detail presisi seperti CorelDraw, Photoshop atau AutoCAD.

Note : Cara ini tidak berlaku untuk Graphic AMD/ATI dan NVidia.

Picture courtesy of Intel.co.id

PCLinuxOS 2010 on Acer TravelMate 4150

A few days ago I tried to install PCLinuxOS 2010 on Acer TravelMate 4150. After downloading the ISO file with KDE version from a local repository, I then burn it to a CD.

Boot time is needed since the laptop is turned up to KDE screen takes about 2 minutes on the Live CD version. All devices on Acer TravelMate 4150 is detected well by PCLinuxOS 2010. I tried to explore the ability of PCLinuxOS 2010 on the laptop. Reading NTFS partitions, open several types of video and audio files and perform Internet connection. Tried a few games that integrated on PCLinuxOS 2010. Everything went smoothly without any problems.

After trying for compatibility on Acer Travelmate 4150, I finally decided to install it permanently on a laptop. The installation process is not difficult. With the GUI interface, I think even a novice will understand. The installation process runs about 20 minutes.

After installation is complete, I restarting my computer and calculate the boot time. These times faster than the Live CD because the PC version of the Linux OS already installed on my hard drive. I do more testing on the compatibility of like when I use the Live CD version.

It seems that the installation version is not as good version of the Live CD, I do not understand why this could occur. I experienced a few times crashes when opening video files, and when to upgrade to some software, it suddenly did not want to open the File Explorer. And when I restart the computer, PC Linux OS 2010 can not open the KDE screen. I can only get in on the Terminal Console.

Overall, this operating system is very good in terms of appearance. All graphical effects on the desktop can be run well. Like Cube Desktop, Transparency, Glass and other effects. From the desktop, this OS is better than Windows Seven who did not support Windows Aero on Intel 915, the embedded graphics chipset in the Acer TravelMate 4150.

I think beyond the problem of stability, PCLinuxOS 2010 could be another option for your laptop.

Hati-Hati Memakai Software Ilegal

Bagi anda yang menggunakan komputer pribadi untuk digunakan sendiri tentunya sudah terbiasa dengan instalasi software pada komputer anda. Anda tidak perlu terlalu khawatir dalam meggunakan atau memasang software, Karena legalitas software bukanlah sesuatu yang perlu anda perhitungkan. Sebab tidak ada yang memantau kegiatan komputer anda.

Namun berbeda halnya apabila komputer tersebut adalah milik perusahaan yang dipakai bersama-sama pengguna lainnya. Atau meskipun anda adalah pengguna tunggal untuk komputer di kantor. Manajemen software tetap harus diperhatikan. Karena perusahaan adalah kegiatan usaha yang menghasilkan uang dari penggunaan software. Maka legalitas software adalah isu utama yang harus diperhatikan.

Sebelumnya saya tidak terlalu memperhatikan masalah legalitas. Hingga sebuah pengalaman menjadikan saya harus lebih berhati-hati dalam memilih software untuk PC di kantor. Pada suatu ketika perusahaan kami terkena razia software ilegal dari pihak kepolisian. Dengan tuntutan yang luar biasa.

Semenjak kejadian itu, perusahaan kami mulai selektif dalam instalasi software. Sebagai IT Administrator, saya juga harus ekstra ketat mengawasi apa saja yang terpasang pada komputer di kantor. Karena terkadang ada karyawan yang tidak terlalu paham dengan legalitas software sehingga dengan seenaknya menginstall software bajakan pada komputer mereka.

Solusi terbaik untuk perusahaan kelas menengah yang rasanya terlalu berat untuk investasi software, maka saya sarankan sebaiknya anda menggunakan open source. Saat ini sudah banyak software gratis yang memiliki kemampuan lebih baik daripada software berbayar.

Anda bisa menggunakan Ubuntu Linux sebagai sistem operasi daripada memaksakan diri menggunakan Windows XP atau Windows 7 bajakan. Dan Open Office sebagai pengganti Microsoft Office. Saya rasa tidak ada kekurangan dari software open source. Mungkin masalahnya hanyalah pada kebiasaan. Karena kita sudah terlanjur familiar menggunakan software keluaran Microsoft.

Namun kalau kita mau sedikit berusaha dan belajar. Lama kelamaan kita juga akan terbiasa. Seperti halnya ketika kita pertama kali mengenal Blackberry, Android, atau Mac OS. Atau bahkan ketika pertama kali menggunakan Windows.

Jika anda pengguna software ilegal, sebaiknya tinggalkanlah kebiasaan itu mulai sekarang. Karena anda tidak pernah tahu kapan nasib buruk menimpa.

Picture is courtesy of technorati.com

Cara Login Otomatis Pada Windows 7

Jika anda menggunakan Windows 7 dengan beberapa User Accounts dan ingin melakukan login otomatis pada akun anda. Caranya cukup mudah. Ikuti saja instruksi berikut ini :

1. Klik pada Start Menu lalu ketik netplwiz pada search box lalu tekan Enter. Perintah ini akan membuka jendela Advanced User Accounts.
2. Pada User Tabs, uncheck pada pilihan Users must enter a user name and password to use this computer.
3. Klik pada tombol dibawah jendela User Accounts.
4. Ketika muncul kotak dialog Automatically Log On, masukan nama user yang kamu inginkan dan isikan password pada kedua kotak dibawah. Klik tombol OK.
5. Klik OK sekali lagi.

Selesai.

Asus 1015BX Low Price High Performance

Some time ago I need a mobile computer to support my work in the field. What I need is a simple device for the need to make a report or just browse the internet and receiving email.

After looking at a wide range of products on the internet I finally decided to choose the ASUS Eee PC Netbook 1015BX. This netbook caught my attention because it has a pretty good specs for the netbook class and it also cheap.

Asus Eee PC 1015BX use AMD C60 processor with 1GHz clock speed and ATI Radeon 6290 graphics card with up to 384MB shared memory and dynamic clock speed 200MHz ~ 400Mhz which already supports DirectX 11.

Installed harddisk capacity is large enough with WDC 320 GB, while the 2GB of DDR3 memory capacity is sufficient to meet the needs of today's applications.

I tried some 3D games on this netbook and most work well even on minimum or medium setting. At least this netbook can run those games. Quite satisfactory when compared with the Intel Atom netbook.

I have tried Pro Evolution Soccer 2012 and Need For Speed ​​Shift 2. Both are capable of running well.

Disappointing to me is the sound quality is not so good. The voice is too small to listening music or watch movies even use the headset though.

But with the price $ 270 I think the ability of this netbook is more than enough.
ASUS EeePC 1015BX Full Specification :

• Processor : AMD C60 1Ghz Dual Core 64
• Graphics : ATI Radeon HD 6290 DDR3 384MB Shared Memory
• RAM : DDR3 2GB Harddisk : WDC 320GB Display : 10.1” 1024 x 600
• Sound : Realtek HD WiFi : Atheros AR9285 LAN : Atheros AR8152/8158
• Webcam : 1.3 MP

Software I’ve installed :

• Windows 7 Professional 64 Bit
• CorelDraw X6 x64
• Adobe Photoshop CS 5.1 x64
• MS Office Professional 2010 x64
• Pro Evolution Soccer 2012
• Tony Hawks America Wasteland