NOOB alert I have been using elementary os for a couple of months without issue. I noticed a couple of days ago a low file space alert. So I increased my root partition from 12 GB to 26 GB which seemed to work fine.
I had a freeze this afternoon so I rebooted and since then all I get is thrown back to the password prompt after a couple of black to grey screen flashes.
I booted off a USB and I can see that the root partition is full but I have no idea why or how to investigate it.
So please help with detailled instructions of how get the diagnostic info you need .. Latest elementary os with updates in the last 24hrs 1TB SSD, 64GB RAM Alienware PC