Linux beginners trick: mount root shell to read-write

If your Linux (Mint) fails to boot because you broke the /etc/fstab, for example, you’ll end up with a ready only root shell. The trick is to mount the root partition to as read-write without actually unmounting it:

# mount -o remount,rw /

After doing that, you wil be able to edit /etc/fstab, correct the error, and reboot normally.

Found on: How to fix Linux boot problems

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