is there a big diff between a full format and a quick format,I have bought new external harddrive and it had some software preinstall on it,and I wanted to get rid
A quick format is just like when u press delete and a full format changes the NTFS system as well in the way that it wipes clean what was on it plus re-organises the ntfs. as far as i can remember.
A quick format resets flags so it appears the data is gone A full format checks the disks and flags up any bad sectors and reassigns the bad sector to one of the spares (these days you get spare sectors lol) this saves the computer writing to bad sectors but takes a very long time on modern disks
do a quick format. if a used hd then would suggest a full format to make certain no bad spots on the drive.