Also, if you have a dual-boot system with XP and Vista, you can also boot XP from the floppy. Copy bootmgr, BCD as described above and also add to the root of the floppy ntdetect.com, boot.ini, and ntldr.
Note that bootmgr and BCD reside on the active, primary partition. So if XP is the active partition and is the primary partition, then Vista boot files will be in the XP partition. This occurs when you install Vista from within XP.
Addendum
Note: for the purposes of creating XP-only, Vista-only, or XP/Vista dual-boot floppies as described in
Multi-boot Vista and Other OSes with Grub Menu, you should change your "Startup and Recovery Settings" in Advanced System Properties from within Vista. Save the settings, boot to XP, then copy the modified
bcd file to floppy. You must do this each time you change the settings.
Addendum 2:
This boot disk will only work on your system and not some else's system. This is because
bcd contains a unique GUID for your Vista installation.
This post has been edited by spacesurfer: 05 June 2007 - 02:18 PM