This is a followup to my post from yesterday, as my “fix” ended up breaking SteamOS (would stay on Deck logo after reboot).

Upon updating to SteamOS 3.5.5 on Stable, NONE of my microSd cards will mount. They all give me the same error:

“An error occurred while accessing ‘mmcblk0p1’, the system responded: The request operation has failed: Error creating directory ‘none’ to be used four mounting /dev/mmcblk0p1: Read-only file system”

I know people will tell me my card is the issue. Bullshit. I’d accept that if it was just one card. But NONE of my cards work and give the same error. Same cards worked before the update. if I downgrade back to 3.4, they still work just fine. I can put them in any other Linux PC, and they still work fine. So this is clearly a SteamOS 3.5 issue, not a microSD issue. Only other person I found with this same issue is on this GitHub issue report: https://github.com/ValveSoftware/SteamOS/issues/1141

Unfortunately, following the steps there didn’t help. The only way I’ve gotten the cards to work is by opening Dolphin as root, going to /run/media/ and making a folder with the name of my microSD’s label. I then open KDE Partition manager and set that as the card’s mount point. Issue with this is that it borks SteamOS upon reboot. I’m just stuck on the Deck logo (going back to Gaming Mode is fine, it’s after an actual reboot).

Does anyone have any solution? The issue seems to be that SteamOS deleted the mount point during the update, but failed to create the new one (for some reason). I have reimaged SteamOS 3.5.5 3 times now. Still the same issue. In the meantime, I’ll downgrade back to 3.4.11.