none
Extending Partition of a BitLockered Drive RRS feed

  • Question

  • Hi all, I'm running Windows 2008R2 on an HP server on a set of RAID5 disks using an HP Raid controller. There's two partitions and thus two drives on the server; C: and D: . I am running real low on disk space on D: and have purchased two additional disk drives. I am going to add them to the server and expand the RAID5 array and then extend the logical drive with the HP Array Config Utility. Here's the question: The C: and D: drive is protected by Windows BitLocker. Do I have to un-Bitlocker the D: drive or both drives before I do this? Any feedback appreciated.  
    Friday, January 29, 2016 2:51 PM

Answers

  • Hi,

    The Bitlocker will only encrypt the added drive. When we extend a volume with Bitlcoker encrypted, we must unlock it first. If we do not unlock the volume, the extend option will not be available. After extended, while checking the volume in explorer, we will see that the volume status is encrypting as shown in Control Panel -> Bitlocker Drive Encryption.

    To extend a volume with Bitlocker encrypted just as simple as extend a normal data volume. You can use either Disk Management or diskpart tool. It will not affect using of the volume. Even we have some shares on this volume, it is still can be normal accessed while the process.

    More articles for your reference:

    BitLocker Drive Encryption

    http://technet.microsoft.com/en-us/library/cc731549(WS.10).aspx   

    BitLocker Drive Encryption Step-by-Step Guide for Windows 7

    http://technet.microsoft.com/en-us/library/dd835565(WS.10).aspx   

    BitLocker Drive Encryption in Windows 7: Frequently Asked Questions

    http://technet.microsoft.com/en-us/library/ee449438(WS.10).aspx  

    Frequently asked questions about the GUID Partitioning Table disk architecture

    http://support.microsoft.com/kb/302873

    Best Regards,

    Alvin Wang


    Please remember to mark the replies as answers if they help and un-mark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Monday, February 1, 2016 7:05 AM
    Moderator

All replies

  • Looks like you can extend it, but be prepared for terrible performance during the expansion of bitlocker and be sure to have the recovery key handy (though you should suspend first).

    • https://social.technet.microsoft.com/Forums/windows/en-US/8398dbab-6c80-4c64-a797-7e9f501e742b/bitlocker-extend-volume?forum=w7itprosecurity
    • http://superuser.com/questions/851360/cannot-extend-non-system-bitlocker-partition
    • https://social.technet.microsoft.com/Forums/office/en-US/b8ae8e81-1acf-46e3-92a5-b6998b6b290f/extend-bitlocked-partition?forum=w8itprosecurity

    Mike Crowley | MVP
    My Blog -- Baseline Technologies


    Saturday, January 30, 2016 2:33 AM
  • Hi,

    The Bitlocker will only encrypt the added drive. When we extend a volume with Bitlcoker encrypted, we must unlock it first. If we do not unlock the volume, the extend option will not be available. After extended, while checking the volume in explorer, we will see that the volume status is encrypting as shown in Control Panel -> Bitlocker Drive Encryption.

    To extend a volume with Bitlocker encrypted just as simple as extend a normal data volume. You can use either Disk Management or diskpart tool. It will not affect using of the volume. Even we have some shares on this volume, it is still can be normal accessed while the process.

    More articles for your reference:

    BitLocker Drive Encryption

    http://technet.microsoft.com/en-us/library/cc731549(WS.10).aspx   

    BitLocker Drive Encryption Step-by-Step Guide for Windows 7

    http://technet.microsoft.com/en-us/library/dd835565(WS.10).aspx   

    BitLocker Drive Encryption in Windows 7: Frequently Asked Questions

    http://technet.microsoft.com/en-us/library/ee449438(WS.10).aspx  

    Frequently asked questions about the GUID Partitioning Table disk architecture

    http://support.microsoft.com/kb/302873

    Best Regards,

    Alvin Wang


    Please remember to mark the replies as answers if they help and un-mark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Monday, February 1, 2016 7:05 AM
    Moderator