Bdtyktl

I have Windows 10 installed on my laptop and I want to install Ubuntu 14.04 in encrypted form so I can boot into a non encrypted Windows 10 or an encrypted Ubuntu 14.04.

I have booted into the laptop using an Ubuntu 14.04 live cd and this is what the current partitions look like:

If I then start the Ubuntu 14.04 installation and select "something else" from the partition screen, I get this:

What do I need to do to the unused space in order to install Ubuntu 14.04 in encrypted form?

I have read many existing questions, but find them very confusing.

If you want to perform a "full disk encryption" of your Ubuntu installation do the following:

• Boot live cd


• Open gparted


• Create 3 partitions:
  
  
  
  
  • boot (ext2) - If you have Windows installed with UEFI, this can be skipped,
  
  
  • root (ext4),
  
  
  • swap (linux-swap)
  
  
  
  


• Apply changes


• Open terminal and sudo -i


• 
  

  Encrypt volumes root and swap

  
  
  

  cryptsetup luksFormat --cipher aes-xts-plain --key-size 512 --hash 
  
  sha512 --iter-time 2000 /dev/sdax
  
  

  
  


• 
  

  Name the encrypted volumes

  
  
  

  cryptsetup luksOpen /dev/sda2 root
  
  cryptsetup luksOpen /dev/sda3 swap
  
  

  
  


• 
  

  Make an ext4 filesystem inside and a swap space

  
  
  

  mkfs.ext4 /dev/mapper/root
  
  mkswap /dev/mapper/swap
  
  

  
  


• Proceed with OS installation


• Select Something else


• Set boot, root and swap partitions (Select each partition, press
  Change and set the appropriate values)


• Continue with installation. Press Install now.


• After installation is finished choose Continue testing


• Open terminal and sudo -i


• 
  

  Chroot Magic

  
  
  

  cd /mnt
  
  mkdir root
  
  mount /dev/mapper/root root
  
  mount /dev/sda1 root/boot
  
  chroot root
  
  mount -t proc proc /proc
  
  mount -t sysfs sys /sys
  
  mount -o bind /dev root/dev
  
  

  
  


• 
  

  Block Device & Filesystem Tables

  
  
  

  nano /etc/crypttab
  
  

  
  


• 
  

  Open a second terminal

  
  
  

  sudo blkid
  
  

  
  


• 
  

  Enter the following content to the crypttab file

  
  
  

  root UUID= (find it from blkid) none luks
  
  swap UUID= (find it from blkid) none luks,swap
  
  

  
  


• Save and exit


• Open the file /etc/fstab and check that it has the root and swap
  entries


• Fix Hibernate and Update Init.


• 
  

  Open with nano /etc/initramfs-tools/conf.d/resume and make the
  following change

  
  
  

  RESUME=/dev/mapper/swap
  
  

  
  


• 
  

  Run in terminal the following command

  
  
  

  update-initramfs -u
  
  exit
  
  

  
  


• 
  

  LUKS Header Backup. Open terminal and run the following commands

  
  
  

  cryptsetup luksHeaderBackup /dev/sda2 --header-backup-file /root/root.img
  
  cryptsetup luksHeaderBackup /dev/sda3 --header-backup-file /root/swap.img
  
  exit
  
  

  
  

The above guide was based on this

I don't see any problems here, install Ubuntu normally on the unused space (you can do some partition stuff like choosing different partitions for different folders etc. but if you don't want to do that, it's ok), during the installation progress, there will be an option called "encrypt my home folder" or something like that, check it, and you're pretty much done.

Even easier you can just make Windows take all the space, and check the option "Install Ubuntu alongside Windows", and it will show a very foolproof interface to you.

I may be wrong here and this is not what you're asking, tho.