The Steam Deck will format the microSD of your choice into the Linux-based format, EXT4, so long as you use any compatible SD, SDXC, or SDHC microSD card, you're good to go.

A Steam Deck comes with 64, 256, or 512GB of onboard storage that you can expand with a microSD card. Here’s how to install and format the best cards.

SD cards are enormously useful devices that hold more data every year. Reformatting an SD or microSD card can make sure all the data that was on it is gone.

Is Steam Deck unable to format SD card? Learn how to correctly install and format an SD card on Steam Deck by following the instructions mentioned in this post.

The SD card must then be formatted so that you can download and install games on your Steam Deck. Format SD Cards As was already mentioned, the Steam Deck requires a specific kind of microSD card.

If you've got an SD or microSD card, knowing how to format it is essential. Here's how to do that on Android devices, computers, and cameras.

Boot Windows 10 or 11 from a MicroSD card Before installing Windows on the Steam Deck, one good recommendation is to boot from a micro SD card or USB drive first.