Ah!  It was the cms format I was forgetting.  Thanks so much..  My brain
isn't working too well today... tgif

-----Original Message-----
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Alan Altmark
Sent: Friday, October 26, 2007 10:02 AM
To: [email protected]
Subject: Re: DASD question

On Friday, 10/26/2007 at 09:39 EDT, "Anne D. Crabtree" 
<[EMAIL PROTECTED]> wrote:
> I have a mod 3 that is known to VM:
> 
> DASD 1472 LX1472  
> 
> I want it to be a mdisk on MAINT and have all my linux instances link
to 
it.
> 
> I formatted LX1472 with CPFMTXA.
> 
> It is not in the User_Volume_List but I added it for next ipl.
> 
> I tried attaching 1472 to SYSTEM, but when I try to access the vdev 
1472, it 
> says it?s in OS format.

1. ATTACH 1472 TO MAINT
2. Using CPFMTXA, allocate the entire volume as PERM and label the
volume. 
 It is not necessary to *format* the volume unless there is residual
data 
on it that you wish to erase OR you are going to use it to contain CP
data 
(spool, paging, parm, ...).  Remember that the guest will turn around
and 
format it for its own use (whether Linux or CMS) and there's no point in

formatting the volume twice!  (And, no, cylinder 0 does not have to be 
formatted unless you mark cylinder 0 as PAGE or SPOOL.)
3. Update your directory (e.g. $ALLOC$) cylinder 0 of that volume is in 
use and/or update your directory management product configuration files.
4. Update SYSTEM CONFIG
5. DETACH 1472 MAINT
6. ATTACH 1472 TO SYSTEM
7. Allocate minidisks on it.
8. The guest that owns the minidisk can format it.

Alan Altmark
z/VM Development
IBM Endicott

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