There's no longer any need to perform what is truly known as a ?Low Level Format? on hard drives.
A true Low Level Format is the process of creating tracks and sectors on the hard drive platter to ready it for data storage. That process is now performed in the manufacturing plant when drives are manufactured, and does not need to be done again. In fact, it?s a quite complex procedure on modern, large capacity drives, and really CANNOT be performed at home.
The term Low Level format is really just a misnomer from days gone by, and the earlier drives which used Modified Frequency Modulation (MFM) just as floppy disks do. When you format a floppy disk you use Low Level Format, when you format a hard drive you do not!
There is no need whatsoever to do a Low Level format! It?s an old-fashioned idea which people don?t realise is no longer relevant.
The drive utilities made available by hard drive manufacturers might CALL the procedure a Low Level Format but it?s really a ?Zero Fill? utility. It overwrites the entire drive with zero values, effectively removing every single trace of data from the drive. Zero Fill utilities most often give you the choice between a ?Quick? function (overwrite the Partition Table and the Master Boot Record) and a ?Full? function, which takes several hours and overwrites the entire drive.
There are really only three reasons for using such a utility:
You have contracted a computer virus which has embedded itself into the drive?s boot sector.
You are changing to a completely different Operating System, and wish to completely remove all traces of what is already on the drive
You are disposing of the system and wish to be completely sure that all traces of data are removed so that they cannot be retrieved again.
A Zero Fill utility may be helpful if a drive is having ?Sector errors? returned persistently for it, but success is unlikely. When a drive proves persistently troublesome with errors, it should really be replaced.
I?ve personally never yet found need to use a utility program such as this, and I doubt if many others really have need for one either. Low Level Format is an old-fashioned, outdated idea, which people simply won?t let lay down and die