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### Sync Flood Error Before POST (6772148)

The system might experience a sync flood error at boot time, just before the POST messages would have been displayed. This causes an immediate reboot, so it is easy to miss the fact that an unsuccessful boot occurred.

The most obvious symptom is a loss of memory capacity due to spurious DIMM errors. Unrecoverable errors such as the following appear in the system event log.

    Memory | Uncorrectable Error | Asserted | CPU 0 DIMM 6
    Memory | Uncorrectable Error | Asserted | CPU 0 DIMM 7
    Memory | Memory Device Disabled | Asserted | CPU 0 DIMM 6
    Memory | Memory Device Disabled | Asserted | CPU 0 DIMM 7

Note - Performing a warm boot (rebooting the OS without powering down the system) does not clear the condition.

## Workaround

- Power down the system and reboot.

  You might need to do this more than once if you continue to see the errors.

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