Re: [PLUG] create a boot record without use of chroot?

[JP Vossen <jp@jpsdomain.org>]

> > first things first, have you tried:
> > chroot /mnt/newroot /bin/bash
>
> That works if I boot into the root directory--thank you!  Then I run
> into the frustrating problem that it doesn't help me because there's a
> separate boot partition, and boot is what I need access to to update
> grub.  If I try the same command to chroot into the boot partition,
> unsurprisingly it doesn't work:
> chroot:  failed to run command /bin/bash:  no such file or directory
>
> If I'd had the entire filesystem on one partition, I'd be all set at
> this point, but because of the separate boot partition it doesn't work.
>  Is there a way around that? 

There are 2 things that help out the whole `chroot` thing and this process.

One is simple, create your mounts the way you need them, then mount them 
that way.  The second is "bind mounts" (kinda like a symlink for a 
mount).  So if you have sda1 as /boot/ and sda2 as / then as root:
	cd /mnt
	mkdir -p recover/boot
	mount /dev/sda2 recover
	mount /dev/sda1 recover/boot
	mount -o bind /dev /mnt/recover/dev
	mount -t proc none /mnt/recover/proc
	chroot recover

Then, **hopefully** you can `grub-install` or whatever you're trying to do.

HTH,
JP
--  -------------------------------------------------------------------
JP Vossen, CISSP | http://www.jpsdomain.org/ | http://bashcookbook.com/
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