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14 May 2011  

Windows 7 Home Premium 32bit, Windows 7 Ultimate 32bit
Old working slave drive no longer showing up

I recently upgraded windows 7 to x64, and now my slave drive is no longer showing up in My Computer. It shows up in the bios, and in Disk manager.

I have tried assigning it a drive letter, but my only option is "help." I have tried uninstalling the driver for it, then restarting, and reinstalling the driver, but it seems like it auto-installs the driver on startup because when i go back into properties, it says its already installed.

I know I can format it to get it to work again, but I have over 300gb worth of stuff on there I don't want to lose.

drive is a Western Digital 640gb Caviar Blue
Running Windows 7 Ultimate x64
drive worked before on windows 7 x86
screenshot of disk manager here

Is there any way for me to get this drive working again without formating?
My System SpecsSystem Spec