You probably got it from Rick Barlow - I'm surprised he hasn't jumped on a
response yet.

An addendum to the original response on QUERY LPAR - not only should
Dynamic I/O be enabled in the LPAR profile, but the configuration token
should be a valid VM token too.  If someone/thing else owns the token, VM
can't play.

The marked lines are probably what you are remembering.  Note the
DYNamic_I/O is in the Disabled section.  That disables dynamic I/O at IPL
and then you can use CP SET DYNAMIC ON to actually do dynamic I/O work on
the system.  Multiple systems/LPARs with DYNAMIC ON at IPL can cause
interesting situations, such as the LAST LPAR to IPL wins the token.  Not
always a good thing depending on what you are expecting to use each LPAR
for.

 Features ,
   Enable ,                        /* Enable  the following features */
*    SET_DEVices,               /* Allow changing of devices bitmaps */
*    SET_DYNamic,             /* Allow use of Set Dynamic On/Off Cmd */
*    NEW_DEVices_Initialized_When_added,         /* Online at IO MCH */
     Set_Privclass ,               /* Allow SET PRIVCLASS command    */
     LogMsg_From_File ,            /* LOGMSG from SYSTEM LOGMSG      */
       Show_Account Yes,           /*   Logmsg by account            */
       Show_ACIgroup Yes,          /*   Logmsg by ACI group          */
       Show_Userid Yes,            /*   Logmsg by userid             */
     Auto_Warm_IPL ,               /* NO prompting at IPL            */
   Disconnect_Timeout,             /* When should forced disc get    */
     15,                           /*   logged off?   15 minutes     */
   Disable ,                       /* Disable the following features */
     Clear_TDisk   ,               /* Don't clear TDisks at IPL time */
*    DYNamic_I/O,                  /* Disable hdw i/o changes        */
   Retrieve ,                      /* Retrieve options               */
     Default  15 ,                 /*   Default                      */
     Maximum  25 ,                 /*   Maximum                      */
   MaxUsers NoLimit ,              /* No limit on number of users    */
   Passwords_on_Cmds ,             /* What commands allow passwords? */
     Autolog  Yes ,                /* ... AUTOLOG does               */
     Link     Yes ,                /* ... LINK does                  */
     Logon    Yes                  /* ... and LOGON does, too        */

_______________________________________
James Vincent
Systems Engineering Consultant
Nationwide Services Co., Technology Infrastructure Engineering
Mainframe, z/VM and z/Linux Support
One Nationwide Plaza  3-25-02
Columbus OH 43215-2220   U.S.A
Voice: (614) 249-5547    Fax: (614) 677-7681
mailto:[EMAIL PROTECTED]

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