megamanx00
Should not be a problem. I am setup to boot to Vista, or winXP, by hitting F12 during boot. If I select Vista, then the drive that Vista is on comes up as "C:" XP comes up as E: If I select XP, then the Drive that XP is on comes up as C:\ and Vista comes up as Drive D.
It also rearranges other drive letters. I have drive letters set for botting Vista. C & D for drive 0 and Drives E (XP), F, & G for Drive 1. When I boot XP Drive 1 E changes to C: and Vista becomes D: and other dive letters change. Current operating system always comes up as C: When You install on seperate drives one at a time, Unless you change it. (not sure you can.)
Throw back First primary partition = C, 2nd Primary partition = D (on 2nd drive). if drive 0 has a extended partition it started with E: Once setup you can go into Windows/Vista and change drive lettes, except boot partition.
My system 4 HDDs, two pair of raid0.