How to determine which disk is available in the system prior to kickstarting it?

Issue

• There are some different machine available in the lab.
• Some are Virtual Machine, some are physical machines with hard disks named as hda/sda/vda or cciss/c0d0
• Need to create a single universal kickstart file for all of them and need to detect which disk is available in the system and partition according to that.
• There is only one disk available in the machine either hda/sda/vda or cciss/c0d0. Not in doubles.