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Boot recovery
 
 
Quick fix
In case the machine doesn't restart anymore, but you want it back to production as fast as possible : boot with some liveCD e.g. Gentoo's, Redhat's to launch the daemons in hurry,
cd /mnt
fsck /dev/sda2
fsck /dev/sda1
mkdir hostexample
mount /dev/sda2 hostexample
mount -t proc none hostexample/proc
mount -o bind /dev hostexample/dev
chroot hostexample /bin/ksh
mount -a
Note change sdaX to your appropriate partition. Here sda2 is /.
Note use either /bin/ksh, /bin/sh or /bin/bash as default chroot shell.
Note the last command should mount /boot and swap.
Check with,
mount
swapon -s
 
Then start the needed daemons,
[...]
service syslog start
service mysqld start
service httpd start
sh /etc/rc.local
service crond start
 
Note you won't be able to run specific modules like "bonding" and the iptables modules unless you prepare the same kernel version modules into /lib/modules.
 
 
Real fix
Check and reinstall GRUB or LILO.
 
For GRUB,
grub-install --no-floppy '(hd0)'
grub --no-floppy
root (hd0,0)
setup (hd0)
quit
vi /boot/grub/menu.lst
Note root seems not to be "/" here, it's rather /boot hence the first partition (hd0,0)
 
For LILO,
vi /etc/lilo.conf
lilo
 
 
References
LILO
 

Last update: Jan 27, 2014