Are you 100% certain that nothing is actually USING those DASD?

I would, at a minimum, for each DASD enter:
Q SYSTEM rdev      <-- Will show if any MDISKs are in use on that volume
CP Q ALLOC volser  <--- Will show any CP areas in use on that volume

And then remove those volsers from SYSTEM CONFIG before going any further.

If it is truly not in use, then you can define a full-pack MDISK on it, 
perhaps assigned to MAINT or $FORMAT$, or some other ID, something like:
MDISK F00 3390 0000 END volser R

Then from an ID authorized to LINK R/W to than DASD, enter: CP LINK 
that_id F00 F00 W
and run ICKDSF to your heart's content. Lather, rinse and repeat.

A write-link should be sufficient, but this whole process is loading a gun 
and aiming it at your foot when trying to format CP_Owned spaces. 

If you guess wrong, and does actually have valid live data on it (PAGE, 
SPOOL, DRCT, WARM, CKPT, TDISK, etc.) or an in-use MDISK, then all bets 
are off and your up-to-date resume should already be stored off-site.  :-)

Mike Walter
Hewitt Associates
The opinions expressed herein are mine alone, not my employer's.




"P L Lovely" <[email protected]> 

Sent by: "The IBM z/VM Operating System" <[email protected]>
05/26/2010 12:39 PM
Please respond to
"The IBM z/VM Operating System" <[email protected]>



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Subject
DSF question






When Decommissioning with ICKDSF for ?owned? DASD 0cuu CP OWNED , 540SPL, 
540RES. 
If attaching to Maint, example: HCPATR122E DASD 0ccu already attached to 
SYSTEM
What are the step that?s best to get ?access? to perform init, erasedata, 
purge?
TIA




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