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MicroSD card file system keeps getting corrupt for no obvious reason

Android Enthusiasts Asked by Bajiru on February 14, 2021

Since when I got my current phone (May 2018) I had to reformat my MicroSD card about 3-4 times, probably because of file system corruption. (It’s a SanDisk 8GB one, for those who are wondering. And the previous owner had installed it on 2 devices, the first was a tablet and the second was my current phone, no problems with them. Guess I was cursed!…)

One day I turned on my phone and noticed that several apps that had been moved to the SD card were no longer functioning (toast notification saying “The app is not installed”). The other three times it just happened out of nowhere. Even today (at the time of writing), I just moved an app from the SD card back to the phone’s internal storage, then the Settings app crashed. I think this also happened because of corruption.

When this happens, I cannot move/copy/edit files to the SD card and a small percentage of my files get corrupt. (Thank God this time only some useless pictures got corrupted!)

Can anyone tell me why my SD card’s file system is getting corrupt out of nowhere almost constantly?

One Answer

Almost 2 years later (because I forgot that this post even exists, sorry).

A week after posting this question here, I ran some tests using h2testw. The microSD card turned out to be faulty. I got a new phone 2 months later and a new Kingston microSD card to go with it. Haven't had a problem since.

Correct answer by Bajiru on February 14, 2021

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