From: Computerpilot on 07/16/2002
Microsoft KBA# Q187641 covers this issue:
What do you mean by "write zeros to the drive"? Did you re-partition your drive and format using fdisk? You do not need to do a low-level format to a drive all the time.
I would suspect that you left the MBR from the old operating system and this is why you are having the problem. Considering you do not have any data you need on the drive, I would recommend restarting the computer with the Windows 98 Startup floppy (obtain one from a friend if you do not have one) and choosing the option to install CDROm support. When you get to the MSDOS prompt, type, "fdisk". View your partitions from the menu. Find out what needs to be deleted. Delete all partitions until you have nothing left. Then create a FAT32 partition (remember to enable large disk support if necessary) and exit the program. Restart your computer with the startup floppy still in the computer. Then format your hard drive ("format c:/"). Restart your computer but this time, attempt to boot from your CDROM...well... I guess you know the rest from here so I won't insult your intellegence.
The KBA listed above mentions another method if you have another OS installed on the computer. My suggestion has been based on the fact that you only have one OS on your hard drive.
Post back if you need more help.