Cannot edit files on sd card

[COMPANION❤CUBE]

my sd card is formatted and i have games on it, but i cannot delete/edit files there? I can add NEW files there if i want for example mod the game with non workshop mod and it works but upon restart files disappear. I believe the inability to change, delete files and new added files disappearing are 1 connected problem with my sd card, maybe steam deck corrupted my sd card? also there is one specific game "limbus company" which if gets updated, uses old version upon restart so i have to redownload the update for the game everytime

[PopinFRESH]

If anything "corrupted" your microSD card then the data wouldn't be readable.

Are you able to use a microSD card reader on another PC to backup/move the data off of your microSD card?

If so, then try to backup/move all your data off of the microSD card; then try to reformat it on Steam Deck through Game mode.

If you get any errors make note of what the specific errors are.

Otherwise if it re-formats without issue then you can copy your backed up files to a USB-C flash drive and then copy them back to the microSD card on Steam Deck through Desktop mode.

[nix]

This is a classic sign of a burned out card that is ignoring all writes but reporting success; the OS caches everything aggressively, so if you write something out it seems to be fine for a while, until either memory fills up and the cache ages out (which probably requires starting a fairly hefty game or two), or until you reboot and the cache is (obviously) cleared.

I would expect this problem to also cause whole-system crashes, because you'll be getting similar problems with the metadata about files as well as with the file data itself -- the card can't tell the difference -- and no OS newer than MS-DOS really likes it when part of the filesystem disagrees profoundly with other parts of it because not all of it has aged out of cache (and been magically reset to an older state) at the same time.

(This can also happen with *fraudulent* cards which claim to be large but are actually really small, with a controller chip that lies about the size of the disk and just throws most of the writes away. If the card is still quite new, this is far more likely than the above.)

[nealiosis]

I was having this issue myself; can add files no problem but can't delete anything: 'ERROR: read-only filesystem'. Executing 'sudo steamos-readonly disable' did nothing to resolve the problem.

Turned out I just needed to unplug and replug in the sdcard and BAM... 'Move to Trash' came back. So odd...