Fdisk.
Windows 98 cd's are not bootable (for the most part) so in order to partition a new hard disk in preparation of a windows 98 install, you will need to make a boot floppy (or boot CD, or USB) which will enable you to partition and format the disk for windows install.
Follow the link below for some disk images, utilities, and workarounds for the windows 98 bootdisk dilemma.
FDISK
Disk management
Use Disk Utility to format or partition hard drives. You should back up the drive before formatting or partitioning.
The system partition(a partition where the operating system is installed) is the active partition of the Hard Drive
In the Applications folder is a folder called Utilities. In the Utilities folder is Disk Utility. Disk Utility will Erase / Partition / Format a hard drive.
system partition
System partition
MaxBlast is a utility that comes with Maxtor branded hard drives that assists in the installation of a new hard drive. The MaxBlast utility will partition and format a drive, and/or install drive overlay software if your computer's BIOS is too old to recognize hard drives over a certain size.
Most of the time the boot partition and the system partition are the same partition on the drive C.
The area on the hard drive that contains a map to all the partition on the drive is called the partition table. That is what partition utilities edit when you add, delete, convert, or resize a partition.
extended partition
Most of the time the boot partition and the system partition are the same partition on the drive C.