Removing Dual Boot Option

Ideally, MS win stuff doesn't take well to modifying which op system to boot in a multi-boot enviroment. If You must remove an op system back-up all your data first preferably to a separate partition than either op system is resident on as well as back-up media.

As for drive assignments the only way to make winxp on g: be seen as winxp on c: would be to wipe c: of the 2k version and re-install xp on c:
(C: is seen as the boot drive by the bios default although if you want to chance it you can try and get fdisk to assign g: as the active boot drive. Some tech have reported some success in doing this whereas Microsoft and others like myself have found this causes loss/damage to all partitions!)

regards
rick

Remove a XP/2K/NT and keep a different XP/2K/NT plus 2K and/or Win9x if also present.
We just make Win #1 the Default OS. Then edit Boot.ini to remove the Win #2 line and to make Timeout=0. Win #1 will now boot directly. The Win #2 directory can then be deleted.
Do not use System or Msconfig to disable the Win #2 - that's unsatisactory.

Example: Remove NT and keep XP: (other combinations are the same)
1. Create a 'temporary' Rescue Bootdisk for your current situation (1 floppy disk).
2. Make XP the Default operating system: (Control Panel > System > Advanced tab
> Startup and Recovery > Settings > "Default operating system" list in System startup).
3. Tip: Boot NT. Uninstall any NT-only software that's mixed in with XP software.
4. Boot XP. Backup Boot.ini to Boot.inn (it's in root of the system partition).
5. Go to Start > Run. Type in - press [Enter] after each line
CMD
CD..
ATTRIB -R -S -H BOOT.INI
NOTEPAD BOOT.INI
Confirm that the Default= line points to your XP installation, and not to Win9x.
If only one OS will remain, change the Timeout=? to TIMEOUT=0
Delete the NT line [multi(0)disk(0)rdisk( - it will be obvious which is for NT].
7. Save as Boot.ini, and exit Notepad.
ATTRIB +R +S +H BOOT.INI
8. Close the Command box, and Reboot.
It will boot straight to XP (if Timeout=0). Test.
9. If all is satisfactory, create a new Rescue Bootdisk to reflect your new situation.
10. Delete the NT installation directory (usually \WINNT) and any unrequired NT data.
Warning: Do not Format the drive containing Boot.ini (that's the system partition!).

There are two methods you could try. The first involves a copy of Partition magic.
1) Build a bootable diskette and change the partition number from 2 to 1. Building a bootable diskette is documented by Microsoft basically you need to format a diskette through NT/2000/XP and copy specific files.
2) Obtain a copy of PqMagic and delete the first partition then resize the second (OS) partition to take it's place.
3) Reboot system and plan to use the diskette to boot to the OS
Second method:
1) Build a bootable diskette and change the partition number from 2 to 1. Building a bootable diskette is documented by Microsoft basically you need to format a diskette through NT/2000/XP and copy specific files.
2) Use a free tool called DelPart to delete the first partition
3) Reboot system and plan to use the diskette to boot to the OS

I have researched this because I am planning to do the same thing. I have two physical drives in my system: drive (1) is split into two logical partitions; the first is drive C:\ with Win2k and the 2nd is drive I:\ with WinXP. Drive (2) is labeled D:\ and is used for files/email pst file/downloads, etc.

I'll assume that you have 2 physical disks in your description: C: (boot drive with Win2k) and G: (WinXP).

Only your C: drive will have a boot.ini file and it determines which version to boot up. Drive G: does not have a boot.ini file and will need one to become a bootable disk if you make it drive C:.

Copy your boot.ini file over to the root (C:\) of your G: drive. Edit the file in Notepad from something like this:
[boot loader]
timeout=20
default=multi(0)disk(0)rdisk(0)partition(2)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="Microsoft Windows XP Home Edition" /fastdetect
multi(0)disk(0)rdisk(0)partition(1)\WINNT="Microsoft Windows 2000 Professional" /fastdetect

To this:
[boot loader]
timeout=0
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Home Edition" /fastdetect

Now search your I386 folder for the files: Ntldr and ntdetect.com and copy both to your root, G:\ (which will become your root drive when your remove C:\ and rename G:\ to C:\).

These 3 files: boot.ini, ntldr and ntdetect.com are required to boot an Intel based computer to Windows NT/2000/XP.

Now boot to Win-XP and open Computer Management through Administrative Tools and under Storage, select Disk Management. Rt-clk on your C: drive and change the drive letter to some unused letter on your system. Now rt-clk on your G: drive and change it's drive letter to C:.

Reboot and you're done.

ALWAYS make sure you have saved any important files prior to making these kinds of changes to your system. you can use any available space on your current C: to copy files from G:.