Windows 10: How does Bitlocker unlocking work?

I'm trying to understand how Bitlocker works, when encrypting the main drive.From my understanding, it encrypts the whole drive, so once the system is shutdown, one would need the decryption key to unlock it.However, when starting the PC, even before entering the user data, some part of the drive must be unlocked, for Windows to even start, no?In the status after booting and before user login, how can Windows run and show the login screen, if the drive is fully encrypted?Is the Windows OS not encrypted, but only the rest of the drive?

:)

 

HELP: Automatic BitLocker Unlock.

Thank you sir, ill try your solution.

Windows Auto unlock ONLY works in case you have Bitlocker on your system drive, because if your system drive is not encrypted auto unlocking other drives means loss of security.
But in my case my system drive is Encrypted with hardware encryption that i password unlock during boot. So auto unlocking Bitlocker drives will do fine for me.

 

BitLocker key cannot unlock the disk. Neither can i reinstall cause the drive is blocked

Hi Havard,

Thank you for posting your query in Microsoft Community.

I understand the inconvenience you are facing currently.

I would appreciate if you can provide us the following information to help us understand the issue better.

• Did you try to unlock the drive using the Bitlocker application in Windows 10?
  
• If yes, did you get any error message while trying that?

I suggest you to follow the methods below and check if that helps:

Method 1:

I would suggest you to try unlocking the drive using the Bitlocker facility available in Windows 10 and check if you are able to unlock it successfully. If you are getting any error message with says “Application not found”, then I would suggest you
to refer the article provided in the link below:

Windows help & learning - Microsoft Support

Method 2:

I would suggest that you try the steps mentioned in the link below and check if it helps resolve your issue.

Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For
added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following link to view the article “How to back up and restore
the registry in Windows” from the Microsoft Knowledge Base:

https://support.microsoft.com/en-us/kb/322756

(Applies to Windows 10)

For more information regarding BitLocker, you may refer the article "BitLocker Frequently Asked Questions (FAQ)" from this link:

http://technet.microsoft.com/en-us/library/hh831507.aspx

Hope the information helps. Please let us know if the issue persist and we will be happy to assist you further.

 

Bitlock unlock?

I'm just wondering what this is for on Bitlocker (unlock)? How do you use it?