How to: repair a broken Ext4 Superblock in Debian

So one day you’re halfway through your morning coffee, and someone has already left you a message:

ext4-fs error: unable to read superblock

The system won’t boot. Files are completely inaccessible. There’s no obvious way to move forward. Looks like you’ve got a full-blown mess on your hands, and you’ve got no clue where it even started.

Alright, first things first—breathe. This can be fixed. Grab that coffee — and let’s clean up this mess fast!

Continue reading