Due to a misconfigured backup I ended up with a folder in the root directory that filled the disk - called Admin. Deleted it, all OK.
Same happened - this time I accidentally deleted an Admin folder under /root by mistake - it freed up 17 GB so probably not a system folder?
System is still working - Is there a legit folder under Admin that I have deleted or am I OK?
System working but I'm afraid to reboot.
John