Boot.ini

[boot loader] timeout=30 default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS [operating systems] multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect

[boot loader] timeout=30 default=multi(0)disk(0)rdisk(0)partition(3)\WINDOWS [operating systems] multi(0)disk(0)rdisk(0)partition(3)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect multi(0)disk(0)rdisk(0)partition(1)\WINNT="Microsoft Windows 2000 Server" /fastdetect

1. partition(1) = hda1
2. hda2 is logical...
3. partition(3) = hda3

Determine current boot.ini partition booted into

mybe some environment variable, %SystemDrive%, IS NOT GOOD it contains the boot volume drive letter, IOW, the drive letter that NTx is installed to.

echo %SystemDrive%