34 | About Your System
Post Error Code
Collecting System Event Log (SEL) for Investigation
Whenever possible, the BIOS will output the current boot progress codes on
the video screen. Progress codes are 32-bit quantities plus optional data. The
32-bit numbers include class, subclass, and operation information. The class
and subclass fields point to the type of hardware that is being initialized.
The operation field represents the specific initialization activity. Based on
the data bit availability to display progress codes, a progress code can be
customized to fit the data width. The higher the data bit, the higher the
granularity of information that can be sent on the progress port. The
progress codes may be reported by the system BIOS or option ROMs.
The Response section in the following table is divided into 3 types:
1 Warning or Not an error – The message is displayed on the screen. An
error record is logged to the SEL. The system will continue booting with
a degraded state. The user may want to replace the erroneous unit.
2 Pause – The message is displayed on the screen, an error is logged to the
SEL, and user input is required to continue or not depending on SETUP
option. The user can take immediate corrective action or choose to
continue booting.
3 Halt – The message is displayed on the screen, an error is logged to the
SEL, and the system cannot boot unless the error is resolved. The user
needs to replace the faulty part and restart the system.
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