Procedure prerequisites with a Trusted Platform Module installed and BitLocker enabled

When a TPM is installed and enabled in the UEFI System Utilities, and when the Microsoft Windows BitLocker Drive Encryption feature is enabled, always disable BitLocker before performing any of the following procedures:

• Restarting the compute module or maintenance without a PIN or startup key
• Upgrading critical early boot components
• Upgrading the system board to replace or remove the TPM.
• Disabling or clearing the TPM
• Moving a BitLocker-protected drive to another compute module
• Adding an optional PCI device, such as a storage controller or network adapter