Repair bad blocks on external disk

1131885 pts.
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External Disk Drives
NTFS
I'm trying to read several files from an external disk (NTFS system) so I tried scanning it for bad blocks. After it was completed, I noticed that it had a ton of bad blocks. Is there a way to repair all these? Does it matter if they are physical or logical?
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You can’t repair them. Once it’s bad it is bad for ever. On a hard drives, of any kind, internal and external you can run the command CHKDSK. Windows will attempt to recover your data but the block is marked as bad. This prevents writing to it in the future. 

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  • Subhendu Sen
    Yes, this is matter of logical/physical. And probably not possible to get intact data that they were erstwhile. How did you check the external disk that is not revealed here. However you can try built-in windows tool first. After inserting the external HDD right click on the drive of external HDD and select properties > select tools tab. Here you can find check now button, click on it & you see a box, where you select the checkbox like scan for and attempt recovery of bad sectors while deselect the checkbox (first one) automatically fix file system errors. Then click start button and let it scan. If you have luck you can get some files. Also you can use 3rd party tools, but they are not so useful to get all files.
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