How safe is it to run CHKDSK on an SSD?

I recently saw Windows 7 pop up a warning or two that I should run chkdsk on my laptop. My laptop came with an SSD and I’m not sure if there are any negative implications to running chkdsk on such a drive. Are there any potential issues with reporting “bad sectors” on the drive? I would imagine that the physical concept of sectors is completely different between a platter and a microchip.

I don’t think my SSD supports TRIM. It’s about 14 months old and a quick web search seems to hint that it doesn’t (though it’s nearly impossible to find out this info for sure!). I’m also not sure if TRIM is even relevant here since there shouldn’t be much in the way of deletes.

So, how safe is it to run chkdsk on my SSD drive?

The model of SSD that I have is reported as “Samsung SSD PB22-JS3 2.5”.

Answer

Are there any potential issues with
reporting “bad sectors” on the drive?

Conceivably chkdsk could report a sector or three as bad and tell the OS to stop using them. That would slightly reduce the available disk space, but it isn’t permanent (you can get it back, with effort). I would be surprised to see chkdsk report an SSD sector as bad though. I wouldn’t run chkdsk to find bad sectors though.

So, how safe is it to run chkdsk on my
SSD drive?

Shouldn’t hurt anything. It is a decent idea if there might have been file system corruption. Possible corruption sources:

  • Unclean shutdown
  • Malicious or benign software that misbehaves.
  • Randomly flipped bits from non-ECC protected poor memory.

Attribution
Source : Link , Question Author : Eilon , Answer Author : Slartibartfast

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