02-18-2012 12:04 PM
02-23-2012 09:39 AM
Did Windows crash when you were using the drive? While it's possible that the drive has died, it could have become corrupted.
Try right-clicking on the drive and select "Properties." Change to the "Tools" tab and click "Check now..." under "Error-checking."
05-28-2012 01:42 PM
If you have a recent version of Windows, this should work.
Open Disk Management (diskmgmt.msc) and locate the drive in question.
Delete all the partitions, create the partitions you want, and then format them
This is for Windows XP, but it's similar in other versions.