You now must partition your disks. The author suggests the following schemes, depending on how much space you have for Linux:
| Space Allocated For Linux | Partitions to Create |
| <= 500MB: | 50MB Linux Swap |
| use rest of space for Linux Ext2 for / | |
| <= 1GB: | 100MB Linux Swap |
| use rest of space for Linux Ext2 for / | |
| > 1GB: | 100MB Linux Swap |
| 100MB Linux Ext2 for / | |
| 1GB Linux Ext2 for /usr | |
| use rest of space for Linux Ext2 for /data or /home |
Linux is perfectly happy booting from an extended partition, so I suggest placing all of your linux partitions inside of an extended partition if you intend to dual-boot the system.
Red Hat provides two methods for partitioning your disk: Disk Druid and fdisk. The author is heavily biased towards fdisk, as it provides a greater level of control, but either is acceptable. Disk Druid is probably easier to use if you aren't already familiar with fdisk.
If you currently have partitions taking all of the space on your drive, and you don't want to remove any of them, you will need to use a third-party utility such as Partition Magic or FIPS to non-destructively resize your partitions. The next sections assume that you have enough free space to create the desired partitions, or are willing to delete existing partitions to make room.