Any simple instructions on how to format the whole of the hard drive of an
old computer with windows 98.
Boot from a boot diskette and run the command Format C:
My parents refuse to throw it out unless all
their files etc are deleted from the hard drive properly.
Formatting does not do a particularly good job of deleting files, and
most people wouldn't call doing that deleting them "properly."
Here's my standard post on deleting the contents of the drive:
It depends on how paranoid you want to be. Note the following.
1 When you delete a file, it normally goes into the recycle bin. That
gets rid of it in one sense, but it can be retrieved from the recycle
bin, if the bin hasn't been emptied.
2. Once you empty the recycle bin, you can no longer retrieve files
from it. However a deleted file is still on the disk --just the space
that it used is now marked as available. There exist many different
undelete programs that can still recover the file, until the space is
rewritten.
3. Once it's gone from the recycle bin, you can make the file much
more difficult to recover by using one of the many available programs
that overwrite deleted files multiple times.
4. Even if the space has been overwritten multiple times, there are
sophisticated (and usually very expensive) data recovery techniques
that can still, at least sometimes, find remnants of the deleted file
and recover it.
5. Because of that last point, the US government does not rely on any
software techniques when getting rid of really sensitive data, but
physically melts the drive in a furnace.
You'll have to decide for yourself to what lengths you want to go.
Personally, I would probably just reformat and reinstall Windows.