Win 7 32 bit / 64bit on same PC

Hi all, I am running Windows 7 Ultimate 32bit, with multiple OSs and multi boot.

Disk 0 Windows 7 - 32 bit
Disk1 Data which can be moved
Disk2 Windows Vista Untimate - 32 bit
Disk3 Windows XP SP2 - 32 bit

Is is possible to install Windows 7 Ultimate 64 bit on Disk 1 and keep Win 7 32 bit on disk 0?
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wlennonVP of Domestic & Int'l OperationsAsked:
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JohnBusiness Consultant (Owner)Commented:
If your PC is a true 64-bit machine and the disk partitions are separate, then it should work. It may depend on how you loaded them up the first time, but it should work. 64-bit PC's will run 32-bit OS's, but not the other way around. ... Thinkpads_User
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lee555J5Commented:
Yes, it will work, and definitely on separate disks/partitions. Starting with Vista, Windows carves out a 100MB partition at the beginning of Disk0 called the Boot Control Device (BCD). Once you get creative with lots of disks, partitions, and OSs, you will probably need this
http://neosmart.net
Look for EasyBCD. The current version works great for all Windows OSs, but you can register in their forums and download a beta that does a lot more for a lot more OSs. I have used EasyBCD with Win7 and Linux for months.
Lee
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wlennonVP of Domestic & Int'l OperationsAuthor Commented:
Wonder what happened to my comment from yesterday...no matter I suppose. Anyway, the install went cleanly...now I am getting the full benefit of the Core i7 Extreme Edition 3.20 GHz QPI 6.40 GT/s and 16GB of Crucial Ballistx memory (just built this PC).

My other desktop is a work only PC with Red Hat Enterprise and have a copy of SuSE. Have been using OSL2000 as my multi  OS boot loader, bought it 6 years ago for $14.95, lifetime upgrades.

First correct answer it thinkpads_user, thanks guys!!!
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wlennonVP of Domestic & Int'l OperationsAuthor Commented:
Quick answer and spot on...
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JohnBusiness Consultant (Owner)Commented:
Thanks and I hope it goes well for you. ... Thinkpads_User
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