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HDD not recognized after changing drive Letter

Last response: in Storage
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January 31, 2013 8:56:23 AM

I changed the drive letter of an external 2.5' HDD (from F to D).

Then for some reason I suddenly can't use the drive anymore.

Now when I plug it, the error message is on Win7 is "You need to format the disk in drive"
The error on Win XP is D:\ is not accessible

which is quite weird.

The drive is not used much, it never had surface problems, etc.
Of course I don't want to format it because I have some info there.

Any ideas about what the problem could be...?

Thanks
February 1, 2013 4:09:00 AM

This drive can receive the “not formatted error” message for many reasons, such as your improper operation, virus attack, or even drive corrupted issue, etc. That’s why one should make data backups on different drives.
However, in your case, you may have no such a data backup. Therefore, to fix your problem, you need a free drive recovery tool to get your information there and format this drive. You can download this freeware from http://blog4mark.blogspot.com/2013/01/unformat-memory-c... It is really worth a shot.
February 6, 2013 10:52:53 AM

Thanks for the advice. I'd go for the data recovery solution only as a last resort. There's always a possibility of erasing the data.
Besides, you can use such software only with drives that are seen by the computer.

Here's some more info:

The HDD is SATA; I can't rename it back because the computer doesn't see it, even in Disk Management.

The optical drive is E, there no drive assigned with D letter.

I tried it on a couple of different computers but same result.

Of course, any HDD can fail, but this problem coincided with changing the drive letter, so it's quite a low probability that the cause is different.
!