I updated to 10 from 7 and backed up all my important docs from the C: before I did. I DIDN'T back up the 3TB worth of raw music recordings I had on my storage drive. After the update was complete, the X: wasn't listed in "My Computer" or whatever its called now. So I checked the device manager to make sure it was still connected and recognized which it was. Then I checked Disk Management and found that all the free space on the drive is unallocated, but all the data is now on a GPT protective partition. How can I recover this? As I said, this is NOT the installation drive. Just a separate storage drive. Any help would be appreciated.

Please help.

I didn't find the right solution from the Internet.

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