this post was submitted on 04 Aug 2025
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For fstab editing, try running "mount " and check if it succeeds before rebooting, so you can still edit if there are mistakes. FYI if you do a sytax mistake in fstab the entire OS might fail to boot. If it happens don't panic, it's easy to fix: you can use the install usb drive to edit fstab on your disk and try again (no need to reinstall!)
There are also graphical tools. I never used them, but it might be easier if you are not feeling super sure on what to do: https://superuser.com/questions/346606/is-there-any-gui-tool-to-configure-etc-fstab
I also use steam to manage external launchers. It's a bit clunky, but it keeps proton updated and works quite well once it's set up.
Welcome to linux, and do ask around for help / tips if you need!