Installed Win7 32-bit. Now want 64-bit

[johne53]

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?

 

[theog]

Only check for 64 bit drivers.

 

[seavixen32]

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: http://www.sevenforums.com/tutorials/2676-bcdedit-how-use.html

Your other partition will be left intact.