[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

How to get system back after grub fail

From: J.V.
Subject: How to get system back after grub fail
Date: Thu, 11 Aug 2011 16:03:18 -0600
User-agent: Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20110624 Thunderbird/5.0

I installed CentOS 6 with the default settings (sda1, sda2), read the grub manual and went to the root command prompt
and typed:

#grub-install /dev/sd1

/dev/sda1 was what was in the docs.

After that I reboot and get a black screen with a blinking white cursor.

I boot with the CentOS CD in rescue mode and get to the root prompt and type:

At the shell, I type:

#grub-install /dev/sda

I get a message:

/sbin/grub: Not found.

Why does this happen?

#which grub-install reveals:

Where do I checkout the grub code to fix this incorrect path to /sbin/grub in /usrs/sbin/grub-install?

My last question is what do I do now specifically such that I can undo what grub-install did (very step by step specifically) so that my CentOS system will boot.

The disk in the drive was the only disk there when I installed CentOS, no other os was there.

Can anyone, anywhere tell me what exactly/specifically needs to be done to undo whatever it was that my first #grub-install /dev/sda1 messed up?

Is there a way to modify the grub code such that it never messes up a system to make it such that it does not boot? like for example if something is wrong with a configuration or the command is not correct, it will not run and say "dave I can't do that" or something such that many hours are not sucked out of lives trying to get a system going again?

I am willing to go make grub more user friendly, apparently it needs some work if it will completely hose a customers system such that it will not boot. Also I can edit the documentation with a list of things to not do , if indeed I did something wrong.

I just want my system to boot again and to use grub to boot off of one of three drives in the system. Is this possible?


reply via email to

[Prev in Thread] Current Thread [Next in Thread]