HP SmartStart-Software - Manual (Page 15)

Deployment options 15
encrypted. However, BitLocker uses a plain text decryption key that is stored on the hard drive to read the
information. After the firmware updates have been completed, the BitLocker Drive Encryption can be
re-enabled. Once the BitLocker Drive Encryption has been re-enabled, the plain text key is removed and
BitLocker secures the drive again.
NOTE: Temporarily disabling BitLocker Drive Encryption can compromise drive security and
should only be attempted in a secure environment. If you are unable to provide a secure
environment, HP recommends providing the boot password and leaving BitLocker Drive
Encryption enabled throughout the firmware update process. This requires the /tpmbypass
parameter for HP Smart Update Manager or the firmware update is blocked.
To temporarily disable BitLocker support to allow firmware updates, perform the following:
1. Click Start, and then search for gpedit.msc in the Search Text box.
2. When the Local Group Policy Editor starts, click Local Computer Policy.
3. Click Computer Configuration>Administrative Templates>Windows Components>BitLocker Drive
Encryption.
4. When the BitLocker settings are displayed, double-click Control Panel Setup: Enable Advanced startup
options.
5. When the dialog box appears, click Disable.
6. Close all the windows, and then start the firmware update.
To enable advanced startup options, use the following command:
cscript manage-bde.wsf -protectors -disable c: