Initiating a DASD dump

You can initiate a dump from a DASD device.

To obtain a dump with the DASD dump tool, perform the following main steps:

1. Stop all CPUs.
2. Store status on the IPL CPU.
3. IPL the dump tool on the IPL CPU.
   Note: Do not clear the main memory.

   The dump process can take several minutes depending on the device type you are using and the amount of system memory. After the dump completes, the IPL CPU should go into disabled wait.

   The following PSW indicates that the dump process completed successfully:

   (64-bit) PSW: 00020000 80000000 00000000 00000000

   Any other disabled wait PSW indicates an error.

   After the dump tool is IPLed, messages that indicate the progress of the dump are written to the console:

   Dumping 64 bit OS
   00000032 / 00000256 MB
   00000064 / 00000256 MB
   00000096 / 00000256 MB
   00000128 / 00000256 MB
   00000160 / 00000256 MB
   00000192 / 00000256 MB
   00000224 / 00000256 MB
   00000256 / 00000256 MB
   Dump successful