Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Installed Win7 32-bit. Now want 64-bit

23 Aug 2011   #1

Windows 7
Installed Win7 32-bit. Now want 64-bit

I have 2 x Windows 7 partitions on my system, both of which are 32-bit installations. I'd like to upgrade one of the installations to 64-bit (I do have a 64-bit machine BTW). Are there any caveats I should know about? I've gathered that an 'upgrade' requries me to choose the Custom Install option which loses all my data files and 3rd party programs but that's no problem; I can back them up and replace them. Anything else I should know about? e.g. will my other partition be left intact?

My System SpecsSystem Spec
23 Aug 2011   #2

Microsoft Community Contributor Award Recipient


Only check for 64 bit drivers.
My System SpecsSystem Spec
23 Aug 2011   #3

Windows 7 Ultimate SP1 64-Bit

Have a read here: 32-bit and 64-bit Windows: frequently asked questions

You can't upgrade, it'll need to be a Custom install.

You might need to edit the boot screen as well: BCDEDIT - How to Use

Your other partition will be left intact.
My System SpecsSystem Spec


 Installed Win7 32-bit. Now want 64-bit

Thread Tools

Similar help and support threads
Thread Forum
oops - have win7 ultimate COA, installed win7 pro; activate?
So, I got a new desktop computer that came with an original windows 7 ultimate COA sticker. I installed windows 7 yesterday, and spend some hours getting it all set, and then got the activation reminder... And then I realized, I accidentally installed windows 7 pro instead (I had last year made...
Windows Updates & Activation
What to do with previous installed Win7
So I installed a new SSD. I migrated the old OS over to the new SSD. My old HD has TONS of stuff on it. How can I get the old copy of Win7 off the old HD. It is just taking up space. Thanks.
Installation & Setup
Win7 installed to SDHC how?
I have a question for you all on how to install win7 onto my 16GB class 6 SDHC card. I can install to my hard-drive fine. During install I'm told that installation to usb media isnt possible. (Onboard reader in eeepc900ha) Please dont send me to EEE forums. They are little to no help.
Installation & Setup
I installed WIN7 but with sounds of XP?
Hi guys, I've installed WIN7 again after having some problems and it all works fine again but the thing I want to know is this: Normally when I open a map or go back to another webpage, I hear the sounds of WIN7 but now it's just like XP. I have to notice/say that my Windows 7 is a downloaded...
Sound & Audio
there is no win7 os after i installed xp
hi i have installed windows 7 before and it was working well i want to install windows xp sp3 so i installed it in another drive but in the os choice menu there is no win 7 but in my hard disk it is showing is there anything so that i can use both xp sp3 and win7 plz help
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 04:41.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App