Hi tkatchev69,

If you do have to seprat Hard Drive's then in you BIOS you should be able to change you boot device.
Example:
if your Primary master is Linux and you Primary slave is XP ( C:Linux, D:XP)
To boot XP change your boot device to D:

I have done sevral Dual-boot systems and this is the safe and easy way.
you may want o check out other post on Dual-boot.
http://www.knoppix.net/forum/viewtop...light=dualboot

hope that helps

(If you do not know what I am talking about let me know and I will fill in the blanks.)