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A couple of disk label SMI (VTOC) / EFI questions.
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Dave  
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 More options Jul 3, 9:12 am
Newsgroups: comp.unix.solaris
From: Dave <f...@coo.com>
Date: Fri, 03 Jul 2009 14:12:34 +0100
Local: Fri, Jul 3 2009 9:12 am
Subject: A couple of disk label SMI (VTOC) / EFI questions.
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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.

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?

--
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unscrupulous as 'Experts Exchange' . In case you are unaware,
'Experts Exchange'  take questions posted on the web and try to find
idiots stupid enough to pay for the answers, which were posted freely
by others. They are leeches.


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Chris Ridd  
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 More options Jul 3, 10:03 am
Newsgroups: comp.unix.solaris
From: Chris Ridd <chrisr...@mac.com>
Date: Fri, 3 Jul 2009 15:03:00 +0100
Subject: Re: A couple of disk label SMI (VTOC) / EFI questions.
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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


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Nomen Publicus  
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 More options Jul 3, 10:05 am
Newsgroups: comp.unix.solaris
From: Nomen Publicus <zzas...@buffy.sighup.org.uk>
Date: Fri, 3 Jul 2009 14:05:07 -0000
Local: Fri, Jul 3 2009 10:05 am
Subject: Re: A couple of disk label SMI (VTOC) / EFI questions.
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Dave <f...@coo.com> wrote:
> 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.

> 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?

format -e

is probably what you want (definitely for part 2.)  but read the man page
first :-)

--
'The Descent of Man' by Darwin is available for free from
Project Gutenberg http://www.gutenberg.org/wiki/Main_Page


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Dave  
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 More options Jul 3, 10:33 am
Newsgroups: comp.unix.solaris
From: Dave <f...@coo.com>
Date: Fri, 03 Jul 2009 15:33:42 +0100
Local: Fri, Jul 3 2009 10:33 am
Subject: Re: A couple of disk label SMI (VTOC) / EFI questions.
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Chris Ridd wrote:
> 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.

Thank you. I would agree, it is a bit naff if there is no more obvious
way of finding out.

In which case I have an SMI label, which is what I want for ZFS boot.

partition> print
Current partition table (original):
Total disk cylinders available: 14087 + 2 (reserved cylinders)

Part      Tag    Flag     Cylinders         Size            Blocks
   0       root    wm    1409 -  2606       11.63GB    (1198/0/0)   24381696
   1       swap    wu       0 -  1408       13.67GB    (1409/0/0)   28675968
   2     backup    wm       0 - 14086      136.71GB    (14087/0/0) 286698624
   3 unassigned    wm       0                0         (0/0/0)             0
   4 unassigned    wm       0                0         (0/0/0)             0
   5 unassigned    wm       0                0         (0/0/0)             0
   6 unassigned    wm       0                0         (0/0/0)             0
   7       home    wm    2607 -  5825       31.24GB    (3219/0/0)   65513088

>> 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.

Yes, your memory does serve you right

format> label
[0] SMI Label
[1] EFI Label
Specify Label type[0]:

The default bing SMI, (or my disk at least).

But there is no need for me to relabel this.

I had the seen options of SMI/EFI in some onine doc

http://www.sun.com/bigadmin/content/submitted/format_utility.jsp

but I'd overlooked the fact the author did state the -e option was
needed. My fault, not his.

Thank you for your help.

--
I respectfully request that this message is not archived by companies as
unscrupulous as 'Experts Exchange' . In case you are unaware,
'Experts Exchange'  take questions posted on the web and try to find
idiots stupid enough to pay for the answers, which were posted freely
by others. They are leeches.


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