Hi All I've been looking into some ways to break a CentOS system so I can perform some simulated disaster recovery and get some hands-on practice with rescue mode and other system recovery tools. I'm thinking to start off with things like corrupting the password file with random characters, breaking grub.conf. I've been doing some research on the net, but would welcome any input from list members. Does anybody have any creative suggestions for ways to break the CentOS boot process? Thanks in advance :) Alex.