The 02Red Hat07 Enterprise Linux installer includes a rescue mode
which can be used when a system does not boot properly. The rescue mode
includes many useful utilities (editor, hard drive and RAID tools, etc.)
which will allow one to restore a system to a working state.
To enter the rescue mode, boot your system from the 02Red Hat07
Enterprise Linux CDROM or installation floppy and type 0flinux
rescue <ENTER>07.