'''OUT OF DISK'''''' SPACE'''

Control will give a message "illegal write request", CONTROL can not write to the hard drive

df -v   This will tell you if the disk is full and which partition is full.

login as root or su -

cd /u (if this is the partition is full)

du -s * |sort -n

This will give you a list of directories which in order of where the drive is full

cd /u/LARGEST_DIRECTORY  (eg. cd /u/printers

du -s * | sort -n   this will sort the directories again to give you a clue

remove the largest files by typing rm x.x