Go to this site
http://www.bootdisk.com/bootdisk.htm
and download these files and add the new fdisk to the floppy when it is created.
Windows 98 SE Custom, No Ramdrive
Updated fdisk for Windows 98 bootdisks
Boot the PC from the Boot Disk.
At the command prompt type in fdisk and press Enter.
If the Hard Drive is Partitioned as FAT32 you will have to delete the Logical Partition first and then the Active Partition. Once that is complete recreate the Primary Partition as the whole drive.
If it is Partitioned as NTFS you will have to delete the NON DOS Logical Partition first and then the NON DOS Active Partition. Once that is complete recreate the Primary Partition as the whole drive.
If you haven't got a Floppy Drive try this
I use 3 programs
http://www.magiciso.com/
http://www.winimage.com/
http://chitchat.at.infoseek.co.jp/vmware/vfd.html#beta
Because a lot of newer PC's don't have Floppy Drives anymore I use Virtual Floppy Drive. VFD.
Winimage is used to manipulate Floppy Drive Images. I have found it best to save them with the .ima extension.
Magic ISO will allow you to create multiboot CD/DVd's with menus.
These programs have help files to get you going.
Magic ISO has a step by step for creating multiboot CD/DVd's.