Welcome,
Boot to dos using a win98 bootdisk (http://www.bootdisks.com) then Fdisk the drive. Reboot (using the win98 bootdisk again)...then format your drive, reboot and install win98 as you normally would.
Boot to dos using a win98 bootdisk (http://www.bootdisks.com) then Fdisk the drive. Reboot (using the win98 bootdisk again)...then format your drive, reboot and install win98 as you normally would.