Table
3-1 (Page 5 of 26). Firmware Error Codes.
Error Code
Description
Action / Possible Failing FRU
20EE000B
The system was not able to find an
operating system on the device list that
was attempted.
Modify the Boot Sequence (also known
as boot list) to include devices that are
known to contain a copy of the Oper-
ating System. This can be accom-
plished by using the System
Management Services Menus. For
example, select a hard disk known to
have a copy of the Operating System
as the first and only device in the boot
sequence (boot list) and attempt to
boot again.
If the SMS menus do not display valid
SCSI devices which were previously
available:
1. Ensure SCSI signal and power
cables are securely connected and
not damaged.
2. Replace the I/O board.
21A000xxx
SCSI Device Errors
Notes:
1. Before replacing any system com-
ponents:
a. Ensure that the controller and
each device on the SCSI bus is
assigned a unique SCSI ID.
b. Ensure SCSI bus is properly
terminated.
c. Ensure SCSI signal and power
cables are securely connected
and not damaged.
2. The location code information is
required to identify the ID of SCSI
device failures as well as to indi-
cate the location of the controller to
which the device is attached.
21A00001
Test Unit Ready Failed - hardware
error.
Refer to the notes in error code
21A000xxx.
1. Replace the SCSI device.
2. Replace the SCSI cable.
3. Replace the SCSI controller.
21A00002
Test Unit Ready Failed - sense data
available.
Refer to the notes in error code
21A000xxx.
1. Replace the Media (Removable
media devices).
2. Replace the SCSI device.
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RS/6000 Enterprise Server Model H50 Installation and Service Guide
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