10 
10.2 |
| System Cannot Boot |
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Begin | INDICATION | TEST/PROCEDURE | REFERENCE | |
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| System cannot boot |
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| or cannot load UNIX |
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| Check LEDs on front panel. | See Table |
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| Check LEDs on clock board. | See Table |
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| Are CPU/Memory board LEDs | See Table |
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| cycling? |
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| Is boot disk running? |
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| Is OBP set to boot automatically? |
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In POST, examine system status:
—connect a terminal to serial port A on the clock board
—set keyswitch to diagnostic position
—type v s
—select system configuration: option 0
—select: option 2
—replace indicated components
System boots with errors or runs with intermittent problems
Check message files.
Run SunVTS to test suspected boards, CPUs, SIMMs, power supplies, other devices.
“Lost carrier” or “no carrier”
Check /var/adm/messages
Refer to SunVTS User’s Guide.
See Section 9.5.1, “Failure of Network Communications.”
End
Figure 10-2 Diagnosing Operating System Problems
Flow Diagrams for Troubleshooting |
