How to have two os with two internal hard drive one os vista ultimate and one os win xp?

In: Windows

Install Win XP on the first hard drive, then install Vista from Xp and on question about "what kind of installation do you want to have?" Answer "separate" installation. When it asks you "which hard drive are you going to use?" Choose the second one. Vista will create a boot list automatically.

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First answer by Archangel dmitry. Last edit by Archangel dmitry. Contributor trust: 80 [recommend contributor]. Question popularity: 11 [recommend question]


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2 os' on 1 hd?  Two os two har drives?  How do you install another OS in an exiting OS?  How do you install two hard drives with two different os XP and Vista in one computer for dual bootup?  How do you install two hard drives with two different os XP and vista ultimate in one computer?