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Removing EFI (format -e not working?)

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hume.sp...@bofh.ca

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Dec 3, 2008, 10:54:27 AM12/3/08
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I'm trying to attach a disk to a ZFS root pool to mirror it after
installation. However, I get this:

shumira:/# zpool attach rpool c5d0 c5d1
cannot label 'c5d1': EFI labeled devices are not supported on root pools.

When I try to use the recommended means of removing the EFI label:

# format -e c5d1
selecting c5d1
[ etc etc ]
format> label
[0] SMI Label
[1] EFI Label
Specify Label type[0]: 0
Ready to label disk, continue? y

format> quit
shumira:/# zpool attach rpool c5d0 c5d1
cannot label 'c5d1': EFI labeled devices are not supported on root pools.

I must be missing something obvious. This is on OpenSolaris Indiana b100.
I'll check with zfs-discuss, but I figured I start here.

--
Brandon Hume - hume -> BOFH.Ca, http://WWW.BOFH.Ca/

hume.sp...@bofh.ca

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Dec 3, 2008, 10:58:37 AM12/3/08
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hume.sp...@bofh.ca wrote:
> shumira:/# zpool attach rpool c5d0 c5d1
> cannot label 'c5d1': EFI labeled devices are not supported on root pools.

Figures. I knew I was doing something stupid.

zpool attach -f rpool c5d0s0 c5d1s0 worked fine.

Dave Uhring

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Dec 3, 2008, 11:18:29 AM12/3/08
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On Wed, 03 Dec 2008 15:58:37 +0000, hume.spamfilter wrote:

> hume.sp...@bofh.ca wrote:
>> shumira:/# zpool attach rpool c5d0 c5d1
>> cannot label 'c5d1': EFI labeled devices are not supported on root pools.
>
> Figures. I knew I was doing something stupid.
>
> zpool attach -f rpool c5d0s0 c5d1s0 worked fine.

I got that far with an EFI mirror disk also. But installing GRUB on the
second drive was no go.

I booted a Slackware Linux CD and removed the EFI label:

dd if=/dev/zero of=/dev/sdb

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