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How to fix corrupted external hard drive?


New Member
I have a problem with my external hard drive, when i plug it in my laptop.. it takes too long to acknowledge it and when i open a file it would hung, i tried to reformat my external hard drive but it says reformat unsuccessful..

Please help


External hard drives are similar to flash drives, so you should be very careful about using an external hard drive. You need to scan your hard drives first and fix errors before you can format the thing. There can be issues like bad sectors which is preventing to format the hard drive.


New Member
I would try a couple of things. First I would run chkdsk on it with the /r option (see http://en.wikipedia.org/wiki/CHKDSK ).

If that doesn't work open the command prompt window and use diskpart ( http://technet.microsoft.com/en-us/library/cc770877(v... ):

type these commands one at a time:
list disk
select disk # (where # is the number of the external drive)
create partition primary
format fs=ntfs (or fs=fat32 if you want to use on PC and Mac)
If your external hard drive can be detached by the computer but all the saved files are corrupted then you can do the following:-
  • Open start and type cmd in the command prompt windows and press enter.
  • Type chkdsk and click enter.
By doing this, it will help you to repair the corrupted external drive and also the files on it.