This document belongs to Manual Full System Encryption (with Extras): Detailed Process.

1. Purpose

The terminal application should have started, or be starting, the Ubuntu Installer.

This page holds the instructions for how to answer the questions.

2. Customised Ubuntu Installation

The Installer should be about to open, or has already opened.

Leave open the three windows:

  • The terminal window
  • This window
  • The Installer window

If the Installer hasn't started, wait up to a minute; if it still doesn't start, start it manually.


You must be connected to the internet. This installation will fail if you are not.

Fill in the prompts as follows.

2.1. Language

  • Choose your language and press Continue.

2.2. Keyboard

  • Select your keyboard.

2.3. Download options

  • Choose "Normal installation", not "Minimal installation", otherwise the installation will fail.
  • Check the box "Download updates while installing Ubuntu" (this saves time).
  • Check the box "Install third-party software", otherwise the installation will fail.

Certain distributions will not give you all three options. Fill in those that you can.

Press Continue.

2.4. Installation type

Select "Something else". Some distributions might name this differently, e.g. Kubuntu calls this "Manual".

Press Continue.

2.5. Installation type (continued)

This section is a little bit complicated. Follow the instructions carefully.

2.5.1. Select the bootloader

Under "Select the device for bootloader installation", select your primary drive. If you're unsure, it's probably the drive with the EFI System Partition (ESP), e.g. /dev/sda or /dev/nvme0n1.

2.5.2. Select the ESP partition

Do you remember which partition holds the ESP (as determined in the partition preparation? Scroll down the table to that partition. It will have the device name (e.g. /dev/sda2) with other details in the remaining columns.

Highlight the line by pressing it.

Press the "Change…" button. if there is no such button, right-click the partition and select "Change".

In the mini window, set "Use as" to "EFI System Partition" (if not already set).

Press OK.

2.5.3. Select the remaining partitions

Repeat the process for each of the device names in the following table, filling in the details as in the following table.

  • In all cases, do not select the "Format" checkbox.

  • The sizes shown in the table below will most likely differ on your system.
  • If you aren't using swap, skip the line for swap.
  • If you don't have a separate data partition, skip the line for data.

Line to highlight

What to fill in after pressing Change…

/dev/mapper/system-swap  swap  4294MB 

Use as: swap area

/dev/mapper/system-boot  ext4  536MB  

Use as: ext4 journaling file system
Mount point: /boot

/dev/mapper/system-root  ext4  25000MB

Use as: ext4 journaling file system
Mount point: /

/dev/mapper/data-home    ext4  25000MB

Use as: ext4 journaling file system
Mount point: /home

3. Install

Press Install Now.

  • You will see a warning about one of the partitions not being marked for formatting. Ignore the warning, and press Continue.
  • You will receive a clarification that changes will be written to disk. Press Continue.
  • Fill in your location when prompted. Press Continue.
  • Fill in your account details:
    • Your name: As it says, fill in your name.
    • Your computer's name: Whatever you want to name your computer. Recommended no longer than 15 characters (for networking with Windows computers).
    • Pick a username: Recommended to be a single word in lowercase, e.g. chris
    • Choose a password: This is the Ubuntu login password that you chose in the high-level overview.

    • Confirm your password: The same password.
    • Press Continue.

4. Completion of Installation

4.1. Completion errors

On completion of the installation, you will receive some errors.


Ignore this error, and press OK.


Ignore this error, and press Close.

The next error might take up to a minute to display, so please be patient.

On some distributions, e.g. Mint, this error might fail to show up. If nothing has shown after a minute, proceed to the bug report below.

apport-data-collection.png send-problem-to-the-developers.png

When you see either of these error messages, press Cancel, because it has already been reported.

4.2. Raising the bug report

If you get this error, please pop across to the bug report and add your vote. (You'll need to sign in or create an account if you don't already have one. Then select the green writing at the top left of the report.)

4.3. Continuation

Do not reboot afterwards.

Instead, return to the detailed process and continue from there.

ManualFullSystemEncryption/DetailedProcessInstallUbuntu (last edited 2018-08-23 17:38:20 by paddy-landau)