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I have installed Windows 10 and Ubuntu 16.04 on my hard drive (Dual Boot). I like to have a common encrypted partition which will be available for both Windows and Ubuntu.

When I was using Windows as my only Operating System, I used BitLocker for this. Since now I'm using both Windows & Ubuntu, I cannot use BitLocker because BitLocker doesn't support Ubuntu.

So, What is the best way to have a common encrypted partition?
In addition, are there any partition formats/types (fat32, NTFS, etc.) specially designed for encryption?

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  • what do you want, a encrypted partition so that it is available in both OS'es, if that is what you want that isn't going to work because it need windows developers and Linux developers to work together to create it, if you want your files to be hidden in windows, then format Ubuntu partition as anything except 'NTFS' and 'fat'. ext4 works well.
    – user495867
    Commented May 14, 2016 at 8:42
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    Cross site duplicate superuser.com/questions/1076784/…
    – Xen2050
    Commented May 15, 2016 at 21:08
  • Related: superuser.com/q/376533/485660
    – DxTx
    Commented Mar 12, 2019 at 10:55

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This might work with LUKS encrypted containers. You have to create one with

cryptsetup -s 512 --hash sha256 luksFormat /dev/partitionNode

(Soon to be released KDE Partition Manager 2.2 can also create luks partitions but at the moment you would have to compile it yourself)

Then open your encrypted device with

cryptsetup open /dev/partitionNode cryptName and then format device /dev/mapper/cryptName with some filesystem.

Then there are a few options for inner FileSystem. Something like FAT32/NTFS will automatically work in both OSes. You can also try more advanced file systems like Btrfs with btrfs driver for windows

You can try opening LUKS partitions in Windows using LibreCrypt.

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