stax0711

Doesn't start Windows with standard setup only from a active primary partition which is always C:. If so a system in a logically partition hasn't drive letter C:, doesn't that fuddle some applications or tasks. I'm missing probably some things here

Are you sure, I hope at least the drive letter can then be changed using a letter towards the end of the alphabet. I tried that but the disk manager in Vista won't allow changing the drive letter of a XP partition , in XP I can change the drive letter of another system partition, no problem. I think in Vista MS makes multi boot a major pain on purpose forcing people to use Vista exclusively.

Sure but I think such a setup can cause problems, it's safer to have the system at C: and let a bootmanager hide other system partitions.