IBM @server xSeries 343, Product Manual

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76 Technical Reference
BIOS Recovery Beep Codes
In the case of a Bootblock update, where video is not available for text messages to be displayed,
speaker beeps are necessary to inform the user of any errors. Table 24 describes the type of error
beep codes that may occur during the Bootblock update.
Table 24. BIOS Recovery Beep Codes
Beeps Error message POST Progress Code Description
1 Recovery started Start recovery process.
2 Recovery boot error Flashing series of
POST codes:
E9h
EEh
EBh
ECh
EFh Unable to boot to floppy, ATAPI,
or ATAPI CD-ROM. Recovery
process will retry.
Series of long
low-pitched single
beeps Recovery failed EEh Unable to process valid BIOS
recovery images. BIOS already
passed control to operating
system and flash utility.
2 long high-pitched
beeps Recovery complete EFh BIOS recovery succeeded, ready
for power-down, reboot.
Bootblock Error Beep Codes
Table 25. Bootblock Error Beep Codes
Beeps Error message Description
1 Refresh timer failure The memory refresh circuitry on the motherboard is faulty.
2 Parity error Parity cannot be reset.
3 Base memory failure Base memory test failure.
4 System timer System timer is not operational.
5 Processor failure Processor failure detected.
6 Keyboard controller Gate A20 failure The keyboard controller may be bad. The BIOS cannot
switch to protected mode.
7 Processor exception interrupt error The CPU generated an exception interrupt.
8 Display memory read/write error The system video adapter is either missing or its memory
is faulty. This is not a fatal error.
9 ROM checksum error System BIOS ROM checksum error.
10 Shutdown register error Shutdown CMOS register read/write error detected.
11 Invalid BIOS General BIOS ROM error.