http://www.eightforums.com/tutorials/21271-bitlocker-turn-off-os-drive-windows-8-a.html
How to Suspend or Resume BitLocker Protection of a Drive in Windows 8
>>manage-bde
-protectors -disable F:
>>manage-bde -protectors -enable F:
How to Turn On or Off BitLocker for Windows 8 OS Drive with or without TPM
>>>Enable_Additional_Authentication_BitLocker_OS_Drive_with_TPM.reg
Windows
Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\FVE]
"UseAdvancedStartup"=dword:00000001
"EnableBDEWithNoTPM"=dword:00000000
"UseTPM"=dword:00000002
"UseTPMPIN"=dword:00000002
"UseTPMKey"=dword:00000002
"UseTPMKeyPIN"=dword:00000002
>>>Enable_BitLocker_OS_Drive_No_TPM.reg
Windows
Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\FVE]
"UseAdvancedStartup"=dword:00000001
"EnableBDEWithNoTPM"=dword:00000001
"UseTPM"=dword:00000002
"UseTPMPIN"=dword:00000002
"UseTPMKey"=dword:00000002
"UseTPMKeyPIN"=dword:00000002
>>>Through gpedit.msc
In
the left pane of Group Policy, click/tap on to expand Computer Configuration, Administrative
Templates, Windows
Components, BitLocker
Drive Encryption, and Operating
System Drives.