Dual Boot Computer with Windows XP and Windows 98

• 1). Start your computer and, from the boot menu on the startup screen, select the operating system that you want to keep installed on your computer, for example "Windows XP."
  
  
• 2). Double-click the "My Computer" icon on the Windows desktop and locate the hard disk drive label that contains the operating system you want to uninstall, for example "Windows 98." Right-click that drive label and select the "Format" option.
  
  
• 3). At the end of the formatting process, double-click the formatted drive's label and verify that it is empty. This ensures that the operating system residing on that drive is removed or uninstalled.
  
  

Dual Boot Computer with Windows XP and Linux

• 1). Start your computer and, from the boot menu on the startup screen, select the operating system that you want to remain on your computer, for example "Windows XP."
  
  
• 2). Click on the "Start > Settings > Control Panel" menu and double-click the "Administrative Tools" icon. Double-click the "Computer Management" icon.
  
  
• 3). In the expandable tree on the left side of the menu, select "Disk Management" under "Storage" label.
  
  
• 4). In the frame on the right-hand side, locate the hard disk drive label that contains the operating system you want to uninstall, for example "Ubuntu Linux 8.0." Right-click on the drive label and select "Delete Logical drive" option. The "Ubuntu Linux 8.0" operating system will be removed from the dual boot computer at the end of this process.
  
  
• 5). Insert the Windows 98 boot disk in the CD/DVD drive and restart your computer. Select the "Boot from disk" option from the startup menu. At the command prompt, enter the command "fixmbr." This will fix the computer's boot-loader to start it normally. Remove the boot disk from CD/DVD drive and restart your computer.