what exactally are you trying to do.....what im gues is that you have only one drive in the computer and you are trying to wipe it clean....anf format....to do what .... install someother os VMS, AIX, LINUX, newre windows..... i havent messed around with anything like that for a while but it would seem to me that you would need to use the mfg's util to clean the disk like stated above...... but if you are planning on installing windows or another os the clweaning and formating will be done during the instlation...