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Windows 7: Dual Boot setup

21 Feb 2011   #1

Windows 7 Ultimate/ Windows XP Professional
Dual Boot setup

I have 3 hard drives in my computer. One for Windows XP Professional, one for Windows 7 Ultimate and one just for storage. My question is can I change my Windows 7 installation to 64 bit and still be able to run XP?

My System SpecsSystem Spec

21 Feb 2011   #2

Windows 7 Home Premium 64 bit

Short answer is YES, you'll have to do a clean install of the 64 bit os with all new drivers but then XP will work just as it did before
My System SpecsSystem Spec
21 Feb 2011   #3

Windows 7 Ultimate/ Windows XP Professional

Sweet! Thanx! RJB
My System SpecsSystem Spec

21 Feb 2011   #4
Microsoft MVP


Unplug all other HD's, set target HD to boot first in BIOS setup, boot the Windows 7 DVD to clean install Win7.

After install, plug in XP HD and boot using one-time BIOS Boot Menu key. This keeps HD's independent to come and go as you please.

Leave XP HD plugged in during install only if you want Windows 7 to write it's boot files to XP while creating a Windows Dual Boot menu, which interlocks the HD's.
My System SpecsSystem Spec
21 Feb 2011   #5
Microsoft MVP

W 7 64-bit Ultimate

If you want a Windows managed dual boot and want the boot files to be created to the Windows 7 partition, after the installation completes, have a look at this tutorial at the link below to see how to mark active the Windows 7 partition and run the startup repairs needed to create the new boot files.

Startup Repair - Run 3 Separate Times
My System SpecsSystem Spec

 Dual Boot setup

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