Message from discussion A couple of disk label SMI (VTOC) / EFI questions.

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From: Chris Ridd <chrisr...@mac.com>
Newsgroups: comp.unix.solaris
Subject: Re: A couple of disk label  SMI (VTOC) /  EFI questions.
Date: Fri, 3 Jul 2009 15:03:00 +0100
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On 2009-07-03 14:12:34 +0100, Dave <f...@coo.com> said:

> A couple of questions I hope someone can help me with, with regard to 
> Solaris 10 on SPARC.
> 
> 1) How do I determine if a disk has a SMI (VTOC) label (therefore 
> suitable for ZFS boot) or EFI label?
> 
> I thought 'format' would show me this, but if it does, I can't see 
> where to find it.

You can infer it (which seems a bit naff) from the partition table 
output style. SMI labelled disks show you cylinders/size/blocks, EFI 
labelled disks show you first sector/size/last sector.

> 2) If it does have a EFI label, how can I convert it to a SMI (VTOC) 
> label, so it could be used as ZFS boot?

You run format with the -e option, and then if memory serves labelling 
will give you the option of SMI/EFI.

-- 
Chris