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MicroSD Card Becomes Read Only - Can't Modify or Erase

Topics: Technical Issues
Jan 29, 2016 at 2:18 PM
The MicroSD card was working fine for months with Read and Write permissions until one day it became read only. The disk container was formatted NTFS and Write access on Mac was provided by OSXFuse.

The card is now Read Only on both Windows and Mac even though the Mount As Read Only option is not selected. Have tried multiple methods to get around this but nothing works. Decided to backup data to external drive and format to original state.

Have not been able to format, repair, or erase disk with; dd, fdisk, diskutil, Disk Utility, DISKPART and receive permission errors. Need to either enable Write Access again or reformat to original state.
Jan 29, 2016 at 4:16 PM
Does your question involve Veracrypt?
Jan 29, 2016 at 5:35 PM
Edited Jan 29, 2016 at 5:38 PM
The Disk is a fully encrypted whole disk volume and only accessible via VeraCrypt. I believe the permissions must have something to do with the way it has been encrypted and why I get Permission Denied on virtually every tool that attempts to modify it. It is the VeraCrypt volume that became Read Only so everything above refers to that.
Jan 29, 2016 at 8:25 PM
Maybe a bad Micro-SD card.
Jan 29, 2016 at 9:01 PM
I'm assuming you are using a Micro-SD card adapter.
Could it be that on the adapter the LOCK switch have been switched on?
That would render the SD-card to read only.
Jan 30, 2016 at 8:42 AM
Unfortunately, no. There is no switch.