Steam Deck Tutorial - How to check if micro sdcard is genuine or fake in SteamOS using f3probe
8This question gets asked from time to time - how to verify if the micro sdcard is genuine or fake?
In SteamOS this is very easy to do!
1. Boot to desktop mode.
2. Insert the micro sdcard and when the notification appears, click the item that says Safely Remove.
3. Open Konsole terminal.
4. Verify micro sdcard is not mounted -
df -h | grep mmc
5. If the result is not blank, then need to unmount the micro sdcard -
sudo umount /dev/mmcblk0
6. Verify that micro sdcard is detected -
lsblk | grep mmc
7. Perform the f3probe test. Warning: this might result in data loss for the micro sdcard. Use this on a fresh micro sdcard, although when I use it on my existing 128G micro sdcard with existing data it is fine -
sudo f3probe -n -t /dev/mmcblk0
8. This will take several minutes depending on the speed and size of the micro sdcard. My 128G card took about a minute for test.
9. All done! The result will say if it is genuine or fake.