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I have Windows 10 64 as primary OS , now I am trying to install Ubuntu 20.04, latest version on the site and to have dual boot . When I am trying to do that I have this error from Ubuntu installation enter image description here

bitlocker encryption

bitlocker encryption is saying that it is not encrypted

Disk managment is saying that it is encrypted this partition

in powershell is saying that it is not encrypted . enter image description here
I have disable secure boot from bios too , does not work . So 2 are saying that it is and 2 are saying that it is not .

How I solved this please ? thank you

enter image description here

leonidaa
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    Looks more a Windows problem than an Ubuntu one. Maybe try asking on SuperUser instead of here... – raj Jan 05 '21 at 17:20
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    it is in between them , like on Windows but it is in Ubuntu too , is affecting both , thank you for your answer , I have already solved – leonidaa Jan 05 '21 at 18:08

3 Answers3

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On Windows 10 Home (Where Bit Locker Encryption does not show) I was just able to stop encryption.

Open Start>>Settings, then type "bitlocker" on search bar (In Setting not Control Panel)

Now you will find "Change Device Encryption Settings" and when you open that tab, you will find turn off option, or go to bitlocker settings.

Step 2. After that go to command Prompt(or PowerShell) by Admin

Disable-Bitlocker -MountPoint "C:"

In my case it was C drive

manage-bde -off "C:"
RESTART

System will initialize BIOS settings and Flash Setting on restart.

Part 2. Patience: There is more. It will start Decrypting. You can check Encryption % using below cmd

Disable-Bitlocker -MountPoint "C:"

You may check DiskManagement in Computer Management for the same.

Community
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Mayank Goyal
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Did that : I faced the same scenario as I try to setup up the dual boot after having received a factory new dell laptop. Turned out for me that the "activation required" step simply is a UI stage as Windows wants me to savely store the recovery key on some media. After having done this and the "activation step" has been completed the device is shown to be encrypted without any processing. So the encryption was already in place, as the disk management and ubuntu both remark.

After activation the GUI shows the regular "device encrypted" screen and options so that the regular guides for decryption can be followed.

s10z

Did that and I have noticed that he is right and it is locked the drive C . But still did not work just with that .

https://docs.microsoft.com/en-us/powershell/module/bitlocker/disable-bitlocker?view=win10-ps

So I have done this in Powershell :

  1. Disable-BitLocker
  2. Remove-BitLockerKeyProtector
  3. Unlock-BitLocker

One of this commands worked but I do not know witch one ?! After that I have seen that in Disk Management the drive is without the word Bitlocker . Then back to Ubuntu installation and it worked perfect and I could install Ubuntu 20.04 in a dual boot with Win 10 64

leonidaa
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I also had this problem. While I turned Bitlocker off on C: - the Recovery partition was also Bitlocker encrypted and I had to turn off the encryption for that partition too. For this you will need to assign a drive letter to the recovery partition and then it will show up in the Bitlocker menu (there I enabled and disabled the encryption). After that Ubuntu installed as expected.

Benedikt Gansinger
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