Grub and USB
Karl Larsen
k5di at zianet.com
Wed Aug 20 00:58:19 UTC 2008
Karl Larsen wrote:
> New Subject. I have a running hard drive connected to my computer
> via a USB port. I need to put grub in the MBR of the USB hard drive OR
> put it on /media/disk/. I have a big problem with this. Grub likes to
> work with (hd1,2) and all my experience has been with things that will
> match that kind of partition location.
>
> People on this list have said it is a simple matter to get a USB
> hard drive to boot if you put the grub root at /media/disk/. I say you
> can't do that because /media/disk/ is NOT a partition. You might treat
> the whole hard drive as a partition but how? It isn't /dev/sb4 or like
> that. In fact I did a df and it calls the USB hard drive /dev/sdb1. now
> /dev/sdb1 is (hd1,0) which I can work with. I will try getting grub
> running and say:
>
> grub root (hd1,0)
> grub setup (hd1,0)
> grub quit
>
> This should work.
>
> Karl
>
>
Here is what happened:
[ Minimal BASH-like line editing is supported. For
the first word, TAB lists possible command
completions. Anywhere else TAB lists the possible
completions of a device/filename. ]
grub> root (hd1,0)
grub> setup (hd1,0)
Checking if "/boot/grub/stage1" exists... yes
Checking if "/boot/grub/stage2" exists... yes
Checking if "/boot/grub/e2fs_stage1_5" exists... yes
Running "embed /boot/grub/e2fs_stage1_5 (hd1,0)"... failed (this is not
fatal)
Running "embed /boot/grub/e2fs_stage1_5 (hd1,0)"... failed (this is not
fatal)
Running "install /boot/grub/stage1 (hd1,0) /boot/grub/stage2 p
/boot/grub/menu
.lst "... succeeded
Done.
grub>
It appears that (hd1,0) has a boot system in it's MBR and IF the BIOS
can find it it will boot. Now to try it... :-)
Karl
--
Karl F. Larsen, AKA K5DI
Linux User
#450462 http://counter.li.org.
PGP 4208 4D6E 595F 22B9 FF1C ECB6 4A3C 2C54 FE23 53A7
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