Is It Safe to Run CHKDSK on Solid State Drive (SSD)?

Many users wonder whether it is safe to run CHKDSK on solid state drive (SSD). This article will look at this question and expose the actual answer.

Windows provides users with an inbuilt disk scan and fix utility – CHKDSK. It has been appreciated a lot thanks to its great performance in detecting and repairing disk issues, preventing data corruption like PST corruption. And in reality, it is highly recommended to run CHKDSK on hard drive at regular intervals. Also, it plays an excellent role in finding and repairing logical bad sectors. Perhaps you have noticed that I mentioned hard drive above, instead of solid state drive (SSD). You may be confused about if CHKDSK is not beneficial to SSD. In the followings, we’ll look at and discuss about this issue in depth. If you are interested in it, please read on.

Is It Safe to Run CHKDSK on Solid State Drive (SSD)?

Not Harmful

Many users have known that defragging is harmful to SSD in that it’ll accelerate the degradation of SSD. Apart from defragmentation, CHKDSK is another built-in disk related tool in Windows. Thus, you may worry that running CHKDSK on SSD many damage the drive as well.

But, to be honest, it will not be that. Firstly, you should know what CHKDSK does on drive. Unlike defragging that is more focused on writing, CHKDSK does more reading than writing to the drive. To be specific, when running, CHKDSK will read the drive data to confirm if everything is fine. If finding something wrong, it’ll set them aside separately. Of course, if you’ve configured CHKDSK to fix something, it will write to drive as well. Yet, the writing operation is indeed so small and quick that it can be neglected completely. Therefore, running CHKDSK doesn’t do harm to your SSD. So you needn’t worry after you accidentally run CHKDSK on SSD.

Not Necessary, too

Aside from worrying about safety, you may also want to make clear whether it is necessary to run CHKDSK on your SSD, like regularly performing it on traditional hard disk drive (HDD).

As we all know, SSD is much more advanced than HDD. For instance, SSD doesn’t have moving parts, so it can be immune from mechanical damages. Besides, one merit of SSD is its sophisticated leveling and controlling technology. That is to say, its drive controller will automatically find and fix the drive issues, which is same as what CHKDSK does. Now that SSD can auto perform it, why do you still persist in running CHKDSK on SSD periodically? Of course, for double check, you can opt to run CHKDSK at will.

Author Introduction:

Shirley Zhang is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including mdf recovery and outlook repair software products. For more information visit

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