If you selected NO for BitLocker support, during the initial operating system installation, set existing 1.5 GB system partition as Active using Disk Manager and reboot the system so your server boots from 1.5 GB partition. Complete the following steps starting with 1.
If you selected Yes, during the initial operating system installation, complete the following steps:
encryption might have a performance impact on your server.
If your TPM (Trusted Platform Module) is not initialized, the TPM
Security Hardware wizard appears. Follow the directions to
initialize the TPM. You must restart or shut down your computer for
the changes to take place.
Use one or more of these options to preserve the recovery password. For each option, select the option and follow the wizard steps to set the location for saving or printing the recovery password.
IMPORTANT: The recovery password is required in the event the encrypted disk is moved to another computer, or changes are made to the system startup information. This password is so important that HP recommends that you make additional copies of the password and store it in a safe place apart from the computer to assure access to your data. Your recovery password is needed to unlock the encrypted data on the volume if BitLocker enters a locked state. This recovery password is unique to this particular BitLocker encryption. You cannot use it to recover encrypted data from any other BitLocker encryption session.
By completing this procedure, you have encrypted the operating system volume and created a recovery password unique to this volume. The next time you log in, you see no change. If the TPM ever changes or cannot be accessed, if there are changes to key system files, or if someone tries to start the computer from a product CD or DVD to circumvent the operating system, the computer switches to recovery mode until the recovery password is supplied.
For more information regarding BitLocker, see the Microsoft® website.