Change / unmount SD card in gaming mode

[Tom@FCB]

In desktop mode, you have the option to safely eject the SD card or data carrier in the taskbar. WHERE can I find this option in gaming mode? There I only find the option to format the SD card. Or is it in
Gaming mode not required to "unmount" the SD card before removing it???
How do you do this?

I've done this once or twice with my 512GB card with no problem. However, yesterday I wanted to use a different (64GB) card, which after ejecting it in gaming mode can no longer be recognized and formatted. Neither from the SteamDeck nor with my PC. The card is only recognized by my Android phone. The files can also be opened via Android...
What could that be?

[[KAMI] RedWyvern]

Game Mode indeed does not require unmounting it.
Nor does Desktop Mode, unmounting is optional if you want to be certain it won't go wrong.
You can swap them while the Deck is in standby to be certain and the still experimental Preview OS has an added eject button.

Windows is unable to read files from Deck formatted cards, while Android can, due to the EXT4 format.
Not sure why the Deck can not read that card anymore but my best guess is a corrupted partition table.

Assuming the card is corrupted and has not failed, you can recover it with the Deck's Desktop Mode.
1. Power > Switch to Desktop
2. Insert the card in the slot
3. Open "KDE Partition Manager"
4. Select the card in the left bar (important step)
5. Device > New Partition Table > Create New Partition Table
6. Apply
Now you can format the card on whatever device you want to use it with.

[Jâbbérwôkkï]

Not sure what caused the card to go wonky on you, but if windows makes a sound when you put it in the reader. you can type & do the following to get it readable again (this will erase the data but save the card ) :

Right-click the Start button on taskbar find Disk Management on the menu that pops up, look at the list of drives that's in the window & find the SD-card. Right click the partition & select Delete Volume. Next, right click again & select New Simple Volume. Follow the prompts & when it gets to the page for file system, in the drop down format it to exfat. It should complete the process & be usable in the Deck once again.