Using The Red Hat Rescue Environment LG #159: "There are several different rescue CDs out there, and they all provide slightly different rescue environments. The requirement here at Red Hat Academy is, perhaps unsurprisingly, an intimate knowledge of how to use the Red Hat Enterprise Linux (RHEL) 5 boot CD.
All these procedures should work exactly the same way with Fedora and CentOS. As with any rescue environment, it provides a set of useful tools; it also allows you to configure your network interfaces. This can be helpful if you have an NFS install tree to mount, or if you have an RPM that was corrupted and needs to be replaced. There are LVM tools for manipulating Logical Volumes, 'fdisk' for partitioning devices, and a number of other tools making up a small but capable toolkit."
