or to format and re-install?
If you mean to wipe the drive clean without anything else, look up DBAN in Google, ("Darik's Boot and Nuke").
If you want to re-install XP, then you can reformat and re-install from the XP CD that came with the machine.
I want to format the hard drive on my old computer (which is running on Win XP Professional), before I get rid of it.
How can I create/get hold of a bootable CD, that has the necessary files, to:
Boot the computer (outside of C:).
Format the hard drive (non-partitioned).