the hard drive cover on the left side take it off remove blue screw pull tab and out comes the hard drive i had a problem like that with mine i downloaded a program called miniaide fat32 formatter and i hooked my hard drive up to my computer and formated it and wipe it with the program and it will say unallocated space and the i put it in my ps3 entered safe mode and sytem updated didnt freeze like normal and it worked after trying hundred of trial and error of other things fixed my problem hopefully can fix yours.