Making an installation of Windows XP on top of Linux installation will make "Dual Boot" environment. Means both OS will be on PC and you will be free to choose and select which to utilize every time you start machine. The benefit to this is that you will be able to run both Linux and Windows based programs on same machine without need to install other hard drive or do other costly installation processes.

Instructions

Configure Linux

Step 1

Go to "Applications" menu, access "Accessories," and open "Terminal."

Step 2

Type in "sudo gedit /boot/grub/menu.lst" and push "Enter."

Step 3

Click "File," choose "Save As," and save copy of file in other place on hard drive.

Step 4

Put in "Ubuntu Live CD" and reboot system.

Step 5

Select option to "Try Ubuntu without any change to your supercomputer" as PC starts.

Step 6

Open "System" tab, click "Administration", and connect "Partition Editor."

Step 7

Right click on partition marked "/dev/sda1" and select option to "Resize."

Step 8

Move slider to make 5GB of space for XP and push "Resize" button.

Install Windows XP

Step 1

Put in Windows XP disc and restart system.

Step 2

Push any key as machine loads to start from CD.

Step 3

Choose "Unpartitioned Space" on disk to install XP, starting usual installation procedure.

Reconfigure Linux

Step 1

Put in Ubuntu Live CD and restart system again, choosing option to "Try Ubuntu without any change to your computer" as PC starts.

Step 2

Open "Applications" menu, click "Accessories", and open "Terminal."

Step 3

Type in "sudo grub, press "Enter," and type in following "root (hd0,0)," "setup (hd0)," "quit," "exit."

Step 4

Restart system again and open Terminal using similar process as in Step 3 of this section. Type in "sudo gedit /boot/grub/menu.lst" and push "Enter."

Step 5

Type in following commands at end of file: "title Windows XP," "root (hd0,1)," "makeactive," and "chainloader +1." Close and save modifications, and PC permits to select between Linux and Windows XP when starts.