Ubuntu under z/VM Installation / IPL problem

Terry Madge terry.madge at tes-es.com
Wed Jun 15 08:46:12 UTC 2016

My colleague has been attempting to install Ubuntu under z/VM and has created the 4 files required to IPL under z/VM CMS for the first time;


When he attempts to IPL by issuing L C02UBU2 BY MAINT, he is prompted by the boot menu and it then goes into a disabled wait state.

The disabled wait state indicates an inability to start the subchannel to continue the IPL, does anyone have any ideas what may be causing the problem? Is there an option during installation that should have been taken? This is being IPL'd using a V7000 , not DS8000 ECKD disk.

ICH70001I C02UBU1  LAST ACCESS AT 11:46:42 ON MONDAY, JUNE 13, 2016
NIC 0700 is created; devices 0700-0702 defined
z/VM Version 6 Release 3.0, Service Level 1501 (64-bit),
built on IBM Virtualization Technology
There is no logmsg data
LOGON AT 15:16:04 GMT MONDAY 06/13/16
zIPL v1.34.0-build-20160414 interactive boot menu

0. default (ubuntu)

1. ubuntu
2. old
Note: VM users please use '#cp vi vmsg <input>'
Please choose (default will boot in 10 seconds):
Booting default (ubuntu)
Start subchannel failed
HCPGIR450W CP entered; disabled wait PSW 00020000 80000000 00000000 00004502

Any help is much appreciated.

Kind Regards

Terry Madge
Senior Technical Consultant
TES Enterprise Solutions

Mobile: +44 (0)7557 981399
Office:  +44 (0)1695 712664
terry.madge at tes-es.com<mailto:terry.madge at tes-es.com>

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