Windows 7 preorder upgrade dual boot install options

[bnc123]

I currently have Vista Ultimate x64 and Windows 7 RC1 x64 running in a dual boot setup. Each OS is installed on a separate disk drive. If I preorder Windows 7 Professional upgrade ($99) will I be able to do a clean install on a partition of my choice or will it force me to clean install over my existing Vista Ultimate partition ?? I understand that I cant do an upgrade in place from Vista Ultimate to Windows 7 Professional. My question is will the preorder Windows 7 upgrade force to me "kill" my Vista Ultimate partition ?

 

[sup3rsprt]

you can clean install using the upgrade disc. If you're careful you shouldn't kill your Vista installation.

Same method as:
Clean Install From Upgrade Vista - Vista Forums