Uninstall Vista from dual boot with XP machine?

Before trying any of these methods, please BACKUP your data first, people 😉

If you’re not sure what you’re doing and you’re afraid that you’ll  end up toasting your PC, get more knowledgeable geeks to do it for you.

Boot your computer in to Windows XP.
Ensure you have the Vista DVD image emulated or in the DVD drive.
Go to “Start” and “Run”. Type in “e:\boot\bootsect.exe /nt52 ALL /force” (without quotes, and replacing e: with the drive letter of your Vista DVD).
Restart the computer, and you will notice the boot selection menu is gone.
Format the partition/drive where you had Vista installed.
Remove two files (Boot.BAK & Bootsect.BAK) on your XP drive’s root folder (C:), these were backup files of your previous bootloader, now no longer useful.
Optional: Restart to ensure it still works.
Use your partition software to merge your partitions together.

Dual-booting with vista can be a little tricky to remove because of the new bootloader.

Playing with dual-boot systems has killed many people’s hard drives. I would suggest massive back-ups before you try to remove part of a dual-boot system. If you mess up, you might be unable to boot to any of your partitions. You do this at your own risk.

Here’s the basic steps you need to do:
1. Backup, backup, backup
2. Reboot and Boot to your XP CD-ROM
3. Start the Recovery Console
4. Run Fixboot
5. Run fixmbr to reset the master boot record
6. Exit the Recovery Console
7. Reboot
8. To remove the extra entry, edit the boot.ini file to remove the “Microsoft Windows Longhorn” entry.
9. Format Your Vista Partition

Note for Tech-Recipes’ method: Created: Nov 02, 2005 Updated: Jan 31, 2007

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