When I start up my machine I get
/bin/sh: ro: No such file or directory
kernel panic - not syncing: Attempted to kill init!

The machine was running fine until last week. The only thing that changed was that I installed rrdtool and assorted packages. I'm running a dual boot RHEL 4 and Windows 2000. When I attempt to to do a restore it complains that it can't find my linux installation and takes me to shell prompt.

Any suggestions?

Thanks in advance.