Backed up the whole disk image to an external drive because I didn’t have time for a proper backup but knew I would need some of those files later.

Installed a fresh new OS on the same disk, used it for a couple of months.

Needed to make some space on the external drive I had the backup on so I’ll just delete the backed up system files from it.

cd /mnt/external_drive

rm - r /usr /boot …

As you can probably see, a fresh new install was happening again

I took my old S5 out of a drawer earlier today because I needed the IR. Never expected to see it mentioned in a recent comment.