Christopher Chan wrote:
>> Is there a way to know where grub is installed? I have a few servers
>> running in RAID 1 software for /boot, I gotta fix this. If I can't
>> tell whether it is installed or not, is it dangerous to re-install it
>> using the command above?
It won't hurt to re-install. The tricky part is knowing where the 2nd
drive in the set will appear when the first fails so you can do the
configuration correctly.
> So long as you have all the necessary grub files, there is not much
> danger. Even if you are missing a config file on this side of the mirror
> (impossible...) so long as you load grub stage 2, you will have the
> power you need to continue if you have access (eg: via serial)
Worst case: boot the install cd with 'linux rescue' at the boot prompt,
let it detect and mount the system partitions, do the chroot it
suggests, then 'grub-install /dev/sda' (or wherever the boot drive
appears now), exit twice, and remove the CD as you reboot.
--
Les Mikesell
lesmikesell at gmail.com