BitLocker Encryption and Decryption
Applies To: Windows Server 2008
Whenever the operating system or an application attempts to read from or write to a BitLocker-protected volume, the BitLocker filter driver must decrypt or encrypt data in real time, sector by sector. The filter driver writes event log information when it encounters problems, even if the problem is corrected with an automatic retry of the operation.
Events
| Event ID | Source | Message |
|---|---|---|
Microsoft-Windows-BitLocker-Driver |
Metadata commit: Not all copies of metadata on volume %2 could be written. If failures continue, decrypt volume. | |
Microsoft-Windows-BitLocker-Driver |
Metadata commit: No copies of metadata on volume %2 could be written. If failures continue, decrypt volume. | |
Microsoft-Windows-BitLocker-Driver |
Metadata commit: Metadata update could not be flushed. | |
Microsoft-Windows-BitLocker-Driver |
Metadata commit: An attempt to verify metadata update on volume %2 failed at read. If failures continue, decrypt volume. | |
Microsoft-Windows-BitLocker-Driver |
Metadata commit: Update verification of metadata on volume %2 failed. If failures continue, decrypt volume. | |
Microsoft-Windows-BitLocker-Driver |
Metadata initial read: Primary metadata record on volume %2 could not be found. Volume needs recovery. | |
Microsoft-Windows-BitLocker-Driver |
Metadata initial read: Failover metadata record on volume %2 could not be found. Volume needs recovery. | |
Microsoft-Windows-BitLocker-Driver |
Metadata initial read: Failover metadata record on volume %2 used. If failures continue, decrypt volume. | |
Microsoft-Windows-BitLocker-Driver |
Metadata check: Metadata record on volume %2 could not be read and has been marked for rebuild. If failures continue, decrypt volume. | |
Microsoft-Windows-BitLocker-Driver |
Metadata rebuild: An attempt build a new set of metadata on %2 failed at commit and may appear as disk corruption. If failures continue, decrypt volume. | |
Microsoft-Windows-BitLocker-Driver |
BIOS/TCG Memory Overwrite Control: Error finding TPM driver. | |
Microsoft-Windows-BitLocker-Driver |
BIOS/TCG Memory Overwrite Control: Error registering TPM device interface. | |
Microsoft-Windows-BitLocker-Driver |
BIOS/TCG Memory Overwrite Control: Error changing value %2. |