This is presumably not a new HD?
Speaking lamely from my own experience and assuming this "new HD" to be the only one in circuit, boot from your 98 setup floppy and at the A: prompt type Fdisk and <Ent>
You will be asked if you want Large disk support Y/N choose yes (This will ensure that you can make Fat32 partitions. .......... Then should display a DOS menu with 4 choices, choice 4 is display partition information.
You will almost certainly have to remove all the partitions one at a time, but starting with any extended partitons first.
When you have no partitions you start by making a primary dos partition and then making it active.
I assume you don't want more than one partition, and now you can come out of FDISK and go back in to FORMAT that single partition.