Windows 7 Pro.
When I open Computer Management/Disk Management, I see that my J: drive, which is no longer accessible in Explorer, is shown as a blank 540.89 GB partition on Disk 1, which it shares with the C: drive.
At the command prompt, typing J: produces: "The system cannot find the drive specified". All other drives, including networked drives can be accessed.
No method appears to be available in Disk Management to make it revert to its old accessible state and, in fact, its old Drive Letter (J) has been transferred to the 100 MB System Reserve partition also on Disk 1.
If I right-click on the partition, my choices are:-
1. Mark partition as Active. (Seems inadvisable?)
2. Change Drive Letter & Paths. All I get here is an error message saying "The operation failed to complete... etc."
3. Format (I don't want to lose the files on this drive.)
4. Delete Volume. Ditto.
5. Properties. All I get here is the same error message as above.
6. Help - doesn't!
I tried Paragon's Partition Manager 11 and it told me that BOTH the partitions on Disk 1 have 'Invalid' file systems, although Win 7 Disk Management shows C: as: "Healthy (System, Boot, Page File, Active, Crash Dump, Primary Partition)".
Can anyone tell me how to regain access to this logical drive?