steamos-readonly
Nov 25th, 2022

The Steam Deck comes configured in a way that part of the filesystem is set to readonly
mode. This sometimes gets in the way when installing custom things on the desktop mode. Like when installing the great Starship prompt.
You can disable the readonly mode with:
sudo steamos-readonly disable
and re-enable it with:
sudo steamos-readonly enable
It's not very well documented what parts it actually protects and this command is not very much documented anywhere either.

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