I have used this JCL to open a VTOC to read it: //DD1 DD UNIT=3390,DISP=SHR,DSN=FORMAT4.DSCB,VOL=SER=xxxxxx
The VTOC might be adjacent to track zero, but I am not sure the DEB for an open VTOC would include track zero. Mike Shaw MVS/QuickRef Support Group Chicago-Soft, Ltd. On Tue, Feb 13, 2024, 1:19 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 > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
