Windows 7 won't acknowledge the existence of second unformated hard drive. How can I format drive is system doesn't recognize that it exists so I can format the drive to be used for backup?

Both HDD are identical, WD750GB. Can't find how to format an unreconized drive in help.
First HDD is SATA and using 64 bit format and want to use the same for second.

Question Info

Last updated March 13, 2018 Views 8,653 Applies to:
Run Disk Management , format the drive, and assign it a drive letter:

1. Press Windows Logo+R , type diskmgmt.msc in the box, and click OK .
2. Right-click the disk and and click Format .
3. Right-click the disk and click Change Drive Letter and Paths .

I'm not sure what you mean by "using 64 bit format".
Steve Winograd

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