Ubuntu installation on computers running Windows and BitLocker turned on


So I wanted to give Ubuntu a try and I didn’t want to lose my Windows Bitlocker disk. Here’s how I installed both. If you have two SSD drives and only want to install Ubuntu on one, you can unplug the Windows one during Ubuntu install and install like you would normally with full disk encryption.

After Ubuntu has been successfully installed just put back the Windows drive and select which one to boot using your BIOS.

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The Ubuntu 22 installer says that it is necessary to reboot into Windows and disable BitLocker, offering a QR code and a link to https://help.ubuntu.com/bitlocker (which links here).

However this is not correct: Suspend Bitlocker before starting the Ubuntu installation and you will avoid the lengthy procedure of decrypting and re-encrypting the disk (which spoils your SSD/NVMe as well).

I also shrunk the Windows volume using diskmgmt.msc so that Ubuntu would have no issues finding the free space where to install.


Thank you!

I’ve successfully installed Ubuntu along side with Windows 11 which had BitLocker enabled by your method. Now both Ubuntu and Windows boot normally.

More more precisely, the option is Something else

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This needs to be reversed please! It makes no sense at all to force turning off bitlocker for drives that you don’t want to include in the install.

For Example: Dual booting windows and ubuntu, but having a storage drive specific for windows only access that’s bit-lockered.

this drive will never, EVER be part of my Ubuntu install. It makes zero sense that the entire ubuntu installation would be stopped due to this.

How do you move past the installation in this case? Sorry, but the recommendation to just remove bitlocker from the drive is kind of asanine when it’s an unnecessary block Ubuntu is imposing that should be skippable.


Too late… I had to read comments before proceeding… it’s been 12hr and still going

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Please please please add this to the main post above (or the install prompt on Ubuntu). So much simpler and saves time of decrypting and encrypting.

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The EFI partition that comes with preinstalled Windows is rather small. Users who know the caveats of creating their own partition are smart enough to do it without this mentioned directly. Users who know a bit about partitioning but do not understand the full consequences should no tbe urged to forge ahead. Also, adding warnings about this-and-that for the borderline users does not belong here. It is better leave the instructions as simple as possible.

Best answer ever. This worked for me like a charm.

Worked like charm! Thank you, it saves so much time and effort!