What does HRESULT 0x80310028 (FVE_E_NOT_OS_VOLUME) mean?

Status / error code:

Category:

Constant name:

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Facility:

Operating System:

Description:

A BitLocker operation intended for the operating-system volume was attempted on a different volume.

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FVE_E_FAILED_AUTHENTICATION	FVE_E_AUTOUNLOCK_ENABLED

FVE_E_NOT_OS_VOLUME

FVE_E_NOT_OS_VOLUME indicates that the selected target is not the Windows operating-system volume. OS-volume operations such as TPM startup protection cannot simply be applied to arbitrary data volumes.

What to check

Confirm the Windows installation volume and do not infer it solely from a drive letter in a recovery environment.
Use data-volume protectors and procedures for fixed or removable data drives.
Review volume role and protection state before retrying the operation.

manage-bde -status

Microsoft: manage-bde -status

Microsoft: BitLocker planning guide

Microsoft: manage-bde -protectors

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