z/VM: CP Commands and Utilities Reference - z/VM - IBM

IPL
Usage Notes
506 z/VM: CP Commands and Utilities Reference
No other parameters may be specified with this parameter. If any other
parameters are specified, all parameters are ignored, and a CONFLICT
parameter is passed to SYSPROF EXEC, as well as the parameters entered on
the IPL command.
MTSEG YES
links the default CMS multitasking segment for this CMS session. The CMS
multitasking segment is an optional shared segment that contains the CMS
multitasking enablement code.
Note: The CMS multitasking segment is no longer used because the
multitasking enablement code is now included in the CMS nucleus. This
parameter has no effect and is retained only for compatibility.
MTSEG NO
indicates that you do not want to use the CMS multitasking segment during this
CMS session.
Note: The CMS multitasking segment is no longer used because the
multitasking enablement code is now included in the CMS nucleus. This
parameter has no effect and is retained only for compatibility.
MTSEG name
links the named CMS multitasking segment for this CMS session. The segment
may be a physical or a logical multitasking segment.
Note: The CMS multitasking segment is no longer used because the
multitasking enablement code is now included in the CMS nucleus. This
parameter has no effect and is retained only for compatibility.
Optional CMS Initialization Usage Notes:
1. If you want to use the NOSPROF, INSTSEG, or SAVESYS parameters of the
IPL command, you must have PARMREGS=0-15 specified on the DEFSYS
command for the CMS named saved system.
2. To indicate that the CMS initial program load is being performed in a batch
rather than an interactive virtual machine, you must specify either the BATCH
parameter on the IPL command or the NOSPROF parameter, and then enter
the CMSBATCH command at the VM READ. Then a BATPROF EXEC is
processed in the batch machine, rather than a PROFILE EXEC. This option
causes the CMS nucleus to issue the CMSBATCH command to load the batch
processor. Specifying the BATCH option eliminates the need for operator
intervention between jobs. See z/VM: CMS Commands and Utilities Reference
for information on the CMSBATCH facility.
3. AUTOCR should not be used for AUTOLOG users if SET AUTOREAD OFF is in
the user’s profile.
Note: For a disconnected CMS service virtual machine, this mechanism can be
useful. The name of a CMS restart routine can be specified in the CMS
nucleus. In case of an abend, the specified restart routine receives
control instead of the service virtual machine entering a disabled wait
state. If this routine issues an IPL CMS PARM AUTOCR command, the
PROFILE EXEC processes initial setup procedures that allow the service
virtual machine to reestablish itself.
4. The SYSPROF EXEC contains some of the CMS initialization function. When
you IPL CMS, it is executed by default before any file modes are accessed. The