OK, I've totally confused myself trying to get back into my old XP MCE installation after installing Vista and could do with being pointed in the right direction.
The problem I am having is that I just can't seem to get the legacy OS entry in VistaBootPro right as whenever I select XP MCE from the bootloader, my machine resets. I thought this might have been a MBR problem on the XP HDD, but I can boot to XP no problem if I physically remove the Vista HDD.
I tried to install Vista from XP, but for some reason it wouldn't let me (something about the drives not meeting its criteria...), so instead I booted from the DVD and did it that way instead. The whole process I followed was:
<li>Started with Windows XP MCE 2005 installed on a SATA drive (the only HDD in the PC at the time).</li>
<li>Installed an 80GB IDE drive and fully formatted to NTFS from XP.</li>
<li>Installed Vista on the IDE drive by booting from Vista DVD</li>
The problem seems to be the whole which drive thinks its C:\ issue as XP where as it appears as G:\ under Vista and Vista appears as D:\ under XP.
Other information that might be of use:
<li>the IDE drive's jumper is set to cable select</li>
<li>The Vista build I'm using is RC1 (5600)</li>
<li>I'm using VistaBootPro v2.1</li>
Any help would be greatly appriciated!

