How to Reinstall Steam OS on Steam Deck
To reinstall SteamOS on your Steam Deck:
1. Download the SteamOS Recovery
Image.
2. Write the SteamOS Recovery ISO to a USB drive with Rufus or Balena Etcher.
3. Boot into SteamOS Recovery.
4. Select "Reinstall SteamOS."
To reinstall SteamOS, you'll need a 8gb or larger USB thumb drive, or a microSD card, to use as a bootable drive. The bootable drive has to have a capacity of at least 16GB since the SteamOS recovery image takes more than 8GB of space on the bootable drive.
Warning
Everything currently stored on the USB drive or SD card you use will be erased, so make sure you back up any existing data if you don't want to lose it.
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