Identifying field replaceable units responsible for faults detected with processor timeouts utilizing IPL boot progress indicator status

A computer program product comprising:

• a computer readable medium;
• and
• program instructions on said computer readable medium for reducing incorrect identification of field replaceable units (FRUs) as a source of a fault that causes a processor of a data processing system to hang, by:
• identifying an occurrence of a time-out during operation of said processor;
• dynamically determining whether an error occurred at a pre-determined checkpoint during boot-up of said data processing system, which may have caused said time-out;
• responsive to said determining step, selecting a normal call out order of FRUs responsible for said time-out only when said error did not occur at said predetermined checkpoint;
• and
• initiating re-ordering of said call out of said FRUs only when an initial program load (IPL) procedure at said pre-determined checkpoint is a last attempted procedure in the boot process.

A data processing system comprising:

• a processor that includes field replaceable units (FRUs);
• a non volatile random access memory (NVRAM);
• an operating system;
• a boot-up application that includes an initial program load sequence that records and stores boot progress indicators in said NVRAM during boot-up;
• a fault isolation mechanism that reduces incorrect identification of field replaceable units as a source of a fault that causes a processor of a data processing system to hang;
• and
• logic for initiating re-ordering of a call out of said FRUs only when an initial program load (IPL) procedure at said pre-determined checkpoint is a last attempted procedure in the boot process.