3

I installed elementary os on my laptop that already has some OS's installed. The way I achieve this is;

  • I have an efi partition /dev/sda1
  • I have a LUKS container in /dev/sda2
  • The LUKS container has a LVM volume group names Linux
  • I have a logical volume named Elementary under the LVM, accessible at /dev/mapper/Linux-Elementary

I already have a boot loader (rEFInd) configured, so what I did when I installed elementary is;

  • Booted live USB
  • Used terminal to launch the installer with --no-boot parameter; since I already have a boot loader.
  • Used cryptsetup open to decrypt the LUKS container at /dev/sda2
  • Installed EOS on /dev/mapper/Linux-Elementary
  • Copied all files in /boot to my ESP and edited fstab accordingly.

However, this leaves me with a couple hiccups. I suspect the initrd does not have any decryption built into it, because if I supply the kernel parameter cryptdevice=UUID=<UUID-here>:cryptroot no decrpytion happens, and after a while I am dumped to busybox initramfs. There is a function in busybox called cryptroot unlock but it gives me an output sed: /conf/conf.d/cryptroot: No such file or directory when I run it. I am unfamiliar with ubuntu based methods of doing this; how do I add decryption to initramfs? (I can chroot in from my other distros to run commands)

I also see a lot of files under /boot, (config-*, abi-*, retpoline-*, System.map-*) which leads me to think that regular kernel parameters might not be enough. (I use rw quiet splash root=/dev/Linux/Elementary in addition to the cryptdevice parameter) Can anyone guide me on what kernel parameters I should use? (Or share your working refind_linux.conf?)

0

Sorry I just read this article today, I think its not relevant anymore, but if you or someone else still has the same problem try the following steps. Ensure that you have put "dm-crypt" in your /etc/modules file of your elementary OS installation. You should also put GRUB_CMDLINE_LINUX_DEFAULT="kopt=root=/dev/mapper/vgubuntu-root" into the /etc/default/grub configuration file of your elementary installation if you are using grub as a boot loader and do an update-grub with chroot.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.