Re: [PLUG] How best to replace old drive with new drive - problems installing grub

[JP Vossen <jp@jpsdomain.org>]

> Date: Sat, 20 Oct 2007 19:39:55 -0400
> From: Mike Leone <turgon@mike-leone.com>
> Subject: Re: [PLUG] How best to replace old drive with new drive -
> 	problems	installing grub
>
> So here's what I did:
>
> installed new HD
> booted knoppix in command line only (knoppix 2)
> mkdir /mnt/oldhd
> mkdir /mnt/oldhd/boot
> mkdir /mnt/oldhd/usr
> mkdir /mnt/oldhd/var
>
> mount /dev/hda5 /mnt/oldhd
> mount /dev/hda1 /mnt/oldhd/boot
> mount /dev/hda7 /mnt/oldhd/usr
> mount /dev/hda8 /mnt/oldhd/var

Cool.  As a side note, the reason this worked is that you already had 
the right dir structure.  The order of operations that I listed 
originally is required if you are doing it with empty partitions (i.e., 
prep for copy); since e.g., "./boot/" will not exist, you have to create 
it before you can mount that volume into it.


> chroot /mnt/oldhd
> /usr/sbin/grub-install hd0
>
> It said:
>
> Could not find device for /boot: not found or not a block device
>
> Had no errors mounting it; if I changed to it, I saw all the proper
> files in /boot.

I don't remember getting this error.  Oops, but I do now vaguely recall 
occasionally having some kind of issue, and installing grub 
interactively via:
	$ grub
		root (hd0,0)
		find /grub/stage1
		setup (hd0)

If the above works it will probably produce some "can't find here but 
did find there" and successful install messages.

Otherwise, does /dev exist in the chroot?  If not, create it.  (Likewise 
/proc, /sys, and anything else missing.)  If that doesn't help, try the 
mount commands Dan previously mentioned.  IIRC you have to do that 
before you do the chroot (someone correct me?):
	mount -o bind /dev /mnt/hda1/dev
	mount -o bind /proc /mnt/hda1/proc


> Thoughts?
>
> (there's reasons why I dislike computers ... :-))

Yeah, tell me about it.  I am long past the time when fooling with 
hardware or the OS was "fun."  Now I want that stuff to Just Work, which 
is why I use Debian when possible, like Matthew. :-)


> (/boot is ext2; all others are ext3. Not that it should matter; mount
> auto-figured out what the format was, else I wouldn't have seen anything)
> ]

FWIW, I usually just make everything ext3.

Later,
JP
----------------------------|:::======|-------------------------------
JP Vossen, CISSP            |:::======|        jp{at}jpsdomain{dot}org
My Account, My Opinions     |=========|      http://www.jpsdomain.org/
----------------------------|=========|-------------------------------
Microsoft has single-handedly nullified Moore's Law.
Innate design flaws of Windows make a personal firewall, anti-virus
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has effectively flattened Moore's Law on hardware running Windows.
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