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The USB stick becomes read-only suddenly and can't be erased

Yesterday, I tried to access anything on my USB, but I don't know what to do because it's now in read-only mode. I've transferred the most crucial data so I won't have to worry about losing too much, but it won't allow me to wipe the drive in order to reformat it. I have no idea what's going on. It also claims that my USB was made in 1980.

Best Answered by

iBoysoft author Amanda Wong

Amanda Wong

Answered on Wednesday, November 22, 2023

It seems that your USB stick is corrupted so you can only read it on Mac. If the disk you're trying to erase is badly damaged, Disk Utility might not have access to the data required to reformat it. 

When the USB drive is read-only on Mac, you can not write data to it. When there is no important data on it, users may attempt to fix it by reformatting, however, Disk Utility won't let you erase the hard drive, and drive corruption could be the culprit.

To fix the issue, you can:

Run Disk Utility First Aid to check and repair the USB stick. (Disk Utility can't repair disk?)

Try to erase the USB stick in Disk Utility again.

If fails, force erase the USB stick with Terminal.


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