Analyzing HMC machine code problems

Learn about analyzing HMC machine code problems with the help of support personnel.

Only perform this procedure if your hardware service provider directs you to do so. The support organization uses the pesh command to look at the HMC's internal machine code to determine how to fix a machine code problem. Only a service representative or service representative can access this feature.

Starting an xterm shell

You might need to start an xterm shell to perform directed support from the support center. This might be required if the support center needs to analyze a system dump in order to better understand machine code operations at the time of a failure. To start an xterm shell, perform the following:
  1. Open a terminal by right-clicking the background and selecting Terminals > rshterm.
  2. Type the pesh command followed by the serial number of the HMC and press Enter.
  3. You will be prompted for a password, which you must obtain from your next level of support.