On Saturday, 01/24/2009 at 08:10 EST, Tony Thigpen <[email protected]> 
wrote:
> Anybody know where in the VM manuals the layout of the VOL1 label is
> documented?

If you want a modern VOL1, see 
- DFSMS: Using Datasets for the VOL1 
- DFSMSafp Advanced Services for the VTOC and DSCBs

If you actually want a CPVOL, it has a form that predates the modern 
standard and is not found in any z/OS or z/VM book.  In the standard in 
use at the time CPVOLs were invented, VOL1(+16) was 25 spaces followed by 
a 10-character OWNER ID starting at VOL1(+41), which is where the "CPVOL" 
designation is stored.  This is what you find in the FMLRC macro. 

Alan Altmark
z/VM Development
IBM Endicott

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