Take a look at the CBT, file 846.

I believe the TRK0SAVE program takes the IPL records from a DASD and writes
them out to a dataset.

https://www.cbttape.org/ftp/cbt/CBT846.zip

Joe

On Tue, Feb 13, 2024 at 12:20 PM Charles Mills <[email protected]> wrote:

> I am interested in writing a program to read the IPL records from a DASD
> volume. (Read only, not update). I am comfortable with XDAP but how do I
> OPEN a "dataset" that would include cylinder 0?
>
> APF, OPERATIONS and so forth are not out of the question.
>
> Thanks,
> Charles
>
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