After you've created partitions for Red Hat Linux, the installation program looks for swap partitions (see Figure 27). If it finds any, it asks whether you want to initialize them. Select the partition(s) you wish to initialize as swap space using [Space]; if you wish to check the partitions for bad blocks, make sure the Check for bad blocks during format box is checked. Choose OK, and press [Space].
If the installation program can't find a swap partition and you're sure one exists, make sure you have set the partition type to Linux swap; see Section 4.3 for information on how this is done with Disk Druid or fdisk.