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Recovering From Kernel PanicBy Edward Stoever
If you configure linux from time to time, and try new things, eventually, you will reboot and find the infamous "kernel panic" error.
This happened to me recently when I attempted to disable SELinux manually by editing the file /etc/selinux/config.
At first, I popped in my trusty System Rescue CD, but quickly found out that it could not mount the newer Linux LVM file system (this was a Fedora Core 3 install). The documentation for the latest version talks about mounting and even editing files on NTFS (that could be good for future reference), but nothing about LVM.
Not to worry, I just created a different rescue CD from Fedora. The Fedora Rescue OS automatically looks for a Fedora distribution on the hard drive and mounts the partition for easy editing. I just opened the file /etc/selinux/config with vim and edited it back to the way it was before this problem.
By the way, to change the system so that SELinux is disabled, use the GUI tool and you won't go wrong.
You can find it in Applications/System Settings/Security Level. It requires a reboot for the change to take place.