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Installing grub 1.95 on a GPT-partitioned system

From: Michael Renner
Subject: Installing grub 1.95 on a GPT-partitioned system
Date: Tue, 16 Jan 2007 18:23:55 +0000 (UTC)
User-agent: Loom/3.14 (


GRUB 2 (1.95) refused to get installed on a GPT-partitioned server.

The layout is as follows:


Disk /dev/sda: 3000GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name  Flags
 1      17.4kB  32.0GB  32.0GB  ext3         root
 2      32.0GB  33.0GB  1000MB  linux-swap   swap
 3      33.0GB  3000GB  2967GB               data


major minor  #blocks  name

   8     0 2929686528 sda
   8     1   31249983 sda1
   8     2     976562 sda2
   8     3 2897459948 sda3
   8    16  488386584 sdb
   8    17   15623181 sdb1
   8    18     979965 sdb2

grub-setup fails with:

datadump:~# grub-setup --root-device='(hd0,0)' '(hd0)'
grub-setup: error: unknown device

and grub-install has misleading errors:

datadump:/boot/grub# grub-install --root-directory=/ --modules=gpt.mod
--modules=ext2.mod '(hd0)'
cannot find a GRUB drive for /dev/sda1.
grub-setup: error: Cannot guess the root device. Specify the option
datadump:/boot/grub# grub-install --root-directory=/ --modules=gpt.mod
--modules=ext2.mod --root-device='(hd0,0)' '(hd0)'
Unrecognized option `--root-device=(hd0,0)'

The rootdevice was /dev/sda1 while I tried this, booting from a second block
device containing only the bootloader and kernel.

Are there any quick (bandaid?) fixes to resolve this problem or should I use a
different "hackaround" in the meanwhile?

best regards,
Michael Renner

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