What does BSOD 183 (BOOTLOG_ENABLED) mean?

 
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ERROR_ALREADY_EXISTSWin32 errorWindows

BOOTLOG_ENABLED

Boot logging enabled marker

BOOTLOG_ENABLED is bug check code 0x000000B7. This value is diagnostic context. It means the boot path is recording driver-load progress, which can be used to correlate a later crash or hang with driver-load ordering.

How to read it in a dump

  • Do not treat the marker as a failing driver.
  • It is useful for reconstructing boot order and comparing multiple boot modes.
  • Combine it with loaded and not-loaded entries.

What to check

  • Preserve the boot log before retrying many times.
  • Compare the last successful and failed boot logs.
  • Use it together with dump analysis rather than as a replacement for a crash dump.

References


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