# Windows – How to do a low-level format

I have a hard disk which has some bad sectors on it. And it said when I booted in Linux mint that I already need to replace the hard disk.
But I don't have yet the money. I'm just a student.
How do I do a low level format? What do I need to do before trying to do it?Is there a particular time span until all of the hard disk breaks down and lose all of my data wen it has already bad sectors on it? How long will a low-level format take, for a laptop with 2Ghz core 2 duo processor and 2Gb ram.

There was a time in the early to mid 80's before Windows dominance where floppy disks were typically sold "unformatted" - and this low-level format had to be performed for the disk to be useable. The old DOS FORMAT command did the low-level format automatically unless you used the /Q switch for a "quick format" - which was not possible on a never-formatted disk. Linux has separate commands for the low-level (fdformat) and high-level (mke2fs, etc.) format.