I hav a 80 Gigs HDD with RHEL4.0 (kernel 2.6) occupying 20 Gigs with ext3 fs. When i installed Debian linux (kernel 2.4) with ext2 format in the free 20 gigs space I am not able to boot into my RHEL and i get the following error SELinux : Unregistering netfilter hooks and the system hangs. My debian Linux is working OK. Pls suggest how can i boot back into my RHEL.