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How to uninstall vista on a dual boot machine

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.

1st Way To Uninstall Vista on a dual boot machine

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.

2ed Way To Uninstall Vista on a dual boot machine.

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.
And now you have returned your computer to its previous state, without Vista and without the new bootloader. If anyone has any issues, please post it in comments and I’ll try to resolve it.

3ed Way To Uninstall Vista on a dual boot machine.
Uninstall Vista on Dual Boot Machine

Before preceding with any of these solutions remember to Format the drive where Windows Vista has been installed previously in order to make this process clean and fully working.

Solution 1: Use VistaBoot Pro.

VistaBoot Pro is a very easy to use and helpful utility designed to make changes to the Windows Vista Boot menu such as changing the name of the Operating Systems shown in the boot menu and make advanced “functional” changes like adding an Operating System to the boot menu and repairing the Windows Vista boot configuration data.
Just Download and Install this software while in Windows XP and delete the Windows Vista entry from the boot menu to solve your issue.

Solution 2: Use Recovery Console
This is the second and the most reliable and fast solution for this issue provided that you have a WindowsXP Home or Professional CD or DVD.
Just change you BIOS settings to boot from CD\DVD-ROM drive and boot from your Windows XP CD. Now, you would see screen as below, Choose the “Recovery Console” option by presing ‘R’ key. Now here is what you have to do. Registry
1. Select the drive number where Windows XP is inatlled (”1? in most cases)
2. Enter your administrator password (if asked)
3. Now type FIXMBR and press Y to confirm your action
4. Now Type FIXBOOT and press Y to confirm again.

and thats it. Enjoy
4th Way To Uninstall Vista on a dual boot machine.

bcdedit /export C:\BCD_Backup
• c:
• cd boot
• attrib bcd -s -h -r
• ren c:\boot\bcd bcd.old
• bootrec /RebuildBcd

Information in this Tutorial courtesy of Spikey133 ©2007