Originally posted by strobe
You shouldn't need a boot disk, or to reformat your hard drive. Reformatting won't clear out the boot sector completely anyway, so there isn't really a whole lot of point to it.
All you have to do is insert the Dell system recovery disk (if you have one) into your CD-ROM, reboot the machine and follow the steps to 'BOOT FROM CD-ROM' when asked. Wait about 25 minutes and your machine will be reimaged to its out of the box state.
This will reimage the hard drive sector by sector, it's more effective than a format would be.
If you don't have a Dell system recovery disk, you will have to FDISK the drive. If you just reformat it, the OEM install of Windows will insist that an O/S is already installed and won't work. Plus, you will want NTFS anyway, so don't format it to FAT, which has a lot of limitations.
Good Luck to you.
Craig