For some reason Calibre won’t let me do anything because “drive is full” which I assume has to do with this.
Update: I believe I “fixed” the error with Calibre by using FlatSeal to add environment variable CALIBRE_TEMP_DIR that changes the Temp directory to something else. So far that’s the only program I’ve seen give trouble.
It comes full from the first boot, because you’re not supposed to be able to write to it. That’s kinda he point of an immutable distro
Got it thanks, I think it’s weird it shows up in Dolphin this way but at least I know what it is now.