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While using my external harddrive (NTFS) i had a crc32 error. Now i would like to see how much data is corrupted. If its a few KBs i wont mind but if its a few MB i should consider getting a new harddrive. How can i check using windows7

Journeyman Geek
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2 Answers2

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You could also try 

chkdsk volume /R

This will attempt to locate bad sectors on the disk and fix them if possible. Otherwise, they will be marked as bad and not used in future.

bryan
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First of all, you don't need a new hard drive. Copy all the files that are not messed up to a different disk and reformat, or just stay on the current disk and do a few fdisks on it. A single write fault is certainly not good grounds for new hardware, heck, it might not have been a write fault at all but simply a random bit flip caused by a stray proton! Don't get a new drive over that, it's just a waste of money.

marcusw
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