Getting your operating system deployment one step closer to being zero touch is always a good goal, so with that in mind here is how to automatically enable BitLocker during OSD using a PIN that you define in a variable at the beginning of the Task Sequence.
The first thing to do is add the
OSDBitlockerPIN variable to the collection you advertise your OSD Task Sequences too. This is very likely the All Unknown Computers collection. Right click on it and select Properties. Navigate to the Collection Variable tab and click New. The name is
OSDBitlockerPIN and you should untick “Do not display this value in the Configuration Manager console”.
Next up open your Task Sequence and add the Enable BitLocker step. This can be placed anywhere after the Setup Windows and ConfigMgr step.1 Make sure Current operating system drive is selected and then select TPM and PIN. You can then enter anything into this field as it will be overwritten by what you enter into the
OSDBitlockerPIN variable when you start the Task Sequence.
Finally, go ahead boot your client into the WinPE environment. Select your Task Sequence and click next and you will be presented with the Edit Task Sequence Variables step. You may already use the
OSDComputerName variable in which case you will already be familiar with this! Double click on
OSDBitlockerPIN and enter the PIN you wish to use for this machine.
Click Next and the Task Sequence will run and complete. BitLocker will be enabled and the PIN will be set. Now you don’t have to configure BitLocker after the operating system has been deployed!
1I would add the Enable BitLocker step at the very end of your Task Sequence, otherwise you will have to enter the PIN each time the machine reboots after applications or updates are installed. You could suspend BitLocker before each reboot, but why go to the extra effort.