Dual OS installation question

I want to set up my PC with both Vista and XP on it. Do both OS have to
reside on the same hard drive or can they be on separate drives?

They can be on the same hard drive, but must be in separate NTFS partitions,
or two hard drive. I've had both set ups.
XP must be installed before Vista and I recommend you Google for either
EasyBCD or VistaBootPro to make booting between systems easier.

--
Peter
Toronto, Canada
XP Pro SP2 x 2 + Vista Ultimate
P4 HT @ 3.00ghz, 4.0gb RAM, 700gb HDD

"Pete in NM" <PeteinNM@discussions.microsoft.com> wrote in message
news:9D0620DD-116F-405C-A56D-710F65D8B222@microsoft.com...
>I want to set up my PC with both Vista and XP on it. Do both OS have to
> reside on the same hard drive or can they be on separate drives?

I meant to post this in the Installation thread.