[lug] How to recover after installing Broken Grub?
dio2002 at indra.com
dio2002 at indra.com
Thu Jul 19 17:37:12 MDT 2007
> Rebuilding the initrd should fix it, if you can get into the system.
> You can probably boot from a live CD, mount up everything on the USB
> drive correctly (or at least root and boot), chroot into it and then run
> update-initramfs.
would this work on RHEL or just debian based distros?
>> Should I be able to edit the GRUB settings so it can boot windows
>> without
>> the USB drive attached? I hope so. Otherwise, I will want to remove GRUB
>> and
>> I don't know how to do that. How do I do that?
>
> Yes, you can do that in the grub config, or at the command line during
> boot. The easy way to remove grub is:
>
> dd if=/dev/zero of=/dev/hda bs=512 count=1
>
> (change hda to your hard drive device). Or put back the Windows MBR.
fdisk /mbr will put back a windows MBR.. fwiw, the dd command above will
remove grub but it does not put a bootloader in its place. which means
that i'm not sure the system will boot any drive at that point..
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