I was originally considering a triple-boot of XP Pro SP3 (32-bit), Vista Ultimate SP1 (64-bit) and Windows 7 (64-bit). However, my copy of XP is an upgrade copy, and I can't (at the moment) locate my Win 98SE disk so that I can clean install XP. In addition, I haven't any drivers
downloaded for XP. In the light of this, and for the reason that I was intending to install XP was so that I could run programs that can only install on a 32-bit system (i.e. have 16-bit installation routines), my question is as follows: As well as the 64-bit version of Vista Ultimate SP1, I have the 32-bit version of it (comes in the same package). This is also the SP1 version. I know that all the disks contain all versions of Vista, so I can install any variant. I also have an older copy of Vista Home Premium 32-bit (all my versions are upgrade versions - more hassle to install, but much, much easier on the pocket) that does not have SP1 integrated. What I want to know is this: Can I install the 32-bit version of Vista from the disk with SP1 pre-integrated (I know that I will have to select Home Premium)and
use the product key that came with my copy of Home Premium?
Same post submitted to Vista Forums for greater coverage/response.