Well, there are 2 things that could have gone wrong:
1. I typed the command wrong - sorry :rolleyes:
I put a space after the C:. The correct command to type is:
format C:/s
Here's a website that explains the command:
http://www.sightsea.com/pghpchd/pages/formatC.html
2. It is possilbe that whatever boot floppy you are using doesn't have the "fromat" program on it. Most ANY Win9x emergency boot floppy DOES have format on it. But some old DOS boot floppies might not. The above website also has a link to a site where you can download a boot floppy. You just download the .exe file, put a blank floppy in the drive, and click on the .exe file. It will create a bootable floppy for you.
That should do it. Oh, there might be one more problem. If your old XP install was on a partition formatted with NTFS, the DOS Format command might not work - you'll get an error similar to: incompatible file system (or something like that). If that happens, you'll have to erase the partition, and create a new one before you can format it. Here's a site that explains how to repartition the drive:
http://www.wavelen.com/pics/hd/
But hopefully you won't have to do it.
If this is your first time reformatting I know it seems confusing. But when you're done you will have learned something good to know! Then the next one will be a lot easier.
Good luck,
Donk