Ubuntu 16.04 LTS (Xenial Xerus) Installation Guide

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Jesse Afolabi

I am an aspiring Linux Engineer, a tech writer on thedroidreview and tecmint, I also love to dance and you can find me on YouTube - be sure to subscribe.

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13 Responses

  1. Al says:

    Just find your post and I wonder if you know how to get off a full disk encryption ?
    For now my xenial works great but I can’t boot anymore from usb and I don’t know how to revert my fully encrypted ssd or just reinstall without encryption from usb (I have my passphrase)

  2. Joung-Won Lee says:

    When I divide my partition and click ‘Install Now’ button, it says “The partition /dev/sdb3 assinged to / starts from the minimum alignment for this disk, which may lead to very poor performance.”. I followed the instructions below, but it still doesn’t work. I Googled it many times, but I didn’t find any suitable solution for it. What should I do?

  3. Prasanth says:

    I couldn’t connect to internet using DSL. Any help?

  4. Nyyr says:

    Formatting screwed my post:

    vg00-lv_root_crypt UUID=uuid of /dev/mapper/vg00-lv_root ………
    vg00-lv_swap_crypt UUID=uuid of /dev/mapper/vg00-lv_swap ……….

  5. Nyyr says:

    I wanted to use LVM and root+swap volume LUKS encryption on a disk containing Windows (half of the disk used). As the installer is not capable of creating LVM and encrypted volumes in this scenario I had 2 options: use mini install ISO or setup disk with desktop ISO manually.

    Mini install ISO installer does not allow installing grub into a partition, only in MBR, so you have to do some manual steps using either option if you want to use Windows boot loader.

    I used desktop Live DVD, in a terminal window I created boot partition and extended LVM partition, created vg00 diskgroup, created lv_root volume, lv_swap volume and lv_home volume.

    Using ´cryptsetup luksFormat –hash=sha512 /dev/mapper/vg00-lv_root´ and ´cryptsetup luksOpen /dev/mapper/vg00-lv_root vg00-lv_root_crypt´ (and the same way for swap) I created encrypted volumes (when you do not use naming convention {VG_NAME}-{LV_NAME}_crypt, the installer will not allow to use it ! ).

    Before I created default user I had to open terminal window again and create /etc/crypttab like this:
    vg00-lv_root_crypt UUID= none luks,hash=sha512
    vg00-lv_swap_crypt UUID= none luks,hash=sha512,swap

    and copy this file to /target/etc/ otherwise the installer FAILED to create the user.

    After that the installer finished successfully. I´m posting this as a hint for newbies like me :-)

    P.S.: If you don’t want to enter password twice during boot, after booting to the new install, modify /etc/crypttab like this:
    vg00-lv_root_crypt UUID= BLABLA1 luks,hash=sha512,keyscript=decrypt_keyctl
    vg00-lv_swap_crypt UUID= BLABLA1 luks,hash=sha512,swap,keyscript=decrypt_keyctl

    (BLABLA1 works like a variable name for storing the password you enter during boot)

    and modify /lib/cryptsetup/scripts/decrypt_keyctl according to the patch (https://launchpadlibrarian.net/183484399/decrypt_keyctl.patch) mentioned here:

    https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/1362881

    DO NOT rename the patched script, in /etc/crypttab it MUST be referred as decrypt_keyctl.

    Finally, run update-initramfs -ck all

  6. Prakash K Vijayan says:

    is there any way to upgrade the o.s to beta version and if its there then how please also tell me the process through graphic and terminal method

  7. Aaron Kili K says:

    What is new in Ubuntu 16.04?

    • Aaron Kili K says:

      When it comes to networking, because there was an issues with networking services in Ubuntu 15.04 and Ubuntu 15.10. Automatic configurations of interfaces was a problem.

      • Jesse says:

        given that Ubuntu 16.04 Xenial Xerus is an entirely new release with the Linux Kernel 4.4 and a lot of other improvements under the hood; I don’t suppose you’ll experience any of the issues you ‘ve mentioned above…but you should really try it out before installing to see how well it works with your hardware..

    • Jesse says:

      you should go through with the article first..

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