Ubuntu Installation Guide

This manual is free software; you may redistribute it and/or modify it under the terms of the GNU General Public License. Please refer to the license in Appendix F, GNU General Public License.


This document contains installation instructions for the Ubuntu 20.04 system (codename Focal Fossa), for the S/390 (s390x) architecture. It also contains pointers to more information and information on how to make the most of your new Ubuntu system.

Table of Contents

Installing Ubuntu 20.04 Focal Fossa For s390x
1. Welcome to Ubuntu
1.1. What is Ubuntu?
1.1.1. Sponsorship by Canonical
1.2. What is Debian?
1.2.1. Ubuntu and Debian
1.3. What is GNU/Linux?
1.4. Getting Ubuntu
1.5. Getting the Newest Version of This Document
1.6. Organization of This Document
1.7. Your Documentation Help is Welcome
1.8. About Copyrights and Software Licenses
2. System Requirements
2.1. Supported Hardware
2.1.1. Supported Architectures
2.1.2. IBM Z and LinuxONE systems
2.1.3. PAV and HyperPAV
2.1.4. Multiple Processors
2.1.5. Network Connectivity Hardware
2.1.6. Disk Storage on S/390
2.1.7. Peripherals and Other Hardware
2.2. Installation Media
2.2.2. Network
2.2.3. Hard Disk
2.2.4. Un*x or GNU system
2.2.5. Supported Storage Systems
2.3. Memory and Disk Space Requirements
3. Before Installing Ubuntu
3.1. Overview of the Installation Process
3.2. Back Up Your Existing Data!
3.3. Point release and HWE kernel
3.4. Information You Will Need
3.4.1. Documentation
3.4.2. Finding Sources of Hardware Information
3.4.3. Hardware Compatibility
3.4.4. Network Settings
3.5. Meeting Minimum Hardware Requirements
3.6. Pre-Partitioning for Multi-Boot Systems
3.7. Pre-Installation Hardware and Operating System Setup
3.7.1. BIOS Setup
3.7.2. Native and LPAR installations
3.7.3. Installation as a VM guest
3.7.4. Setting up an installation server
4. Obtaining System Installation Media
4.1. Official Ubuntu CD-ROMs
4.2. Downloading Files from Ubuntu Mirrors
4.2.1. Where to Find Installation Images
4.3. Automatic Installation
4.3.1. Automatic Installation Using the Ubuntu Installer
4.3.2. Automatic Installation Using Kickstart
5. Booting the Installation System
5.1. Booting the Installer on S/390
5.1.1. S/390 Limitations
5.1.2. S/390 Boot Parameters
5.2. Boot Parameters
5.2.1. Ubuntu Installer Parameters
5.2.2. Using boot parameters to answer questions
5.2.3. Passing parameters to kernel modules
5.2.4. Blacklisting kernel modules
5.3. Troubleshooting the Installation Process
5.3.1. Boot Configuration
5.3.2. Interpreting the Kernel Startup Messages
5.3.3. Reporting Installation Problems
5.3.4. Submitting Installation Reports
6. Using the Ubuntu Installer
6.1. How the Installer Works
6.2. Components Introduction
6.3. Using Individual Components
6.3.1. Setting up Ubuntu Installer and Hardware Configuration
6.3.2. Setting Up Users And Passwords
6.3.3. Partitioning and Mount Point Selection
6.3.4. Installing the Base System
6.3.5. Installing Additional Software
6.3.6. Making Your System Bootable
6.3.7. Finishing the Installation
6.3.8. Troubleshooting
6.3.9. Installation Over the Network
7. Booting Into Your New Ubuntu System
7.1. The Moment of Truth
7.2. Mounting encrypted volumes
7.2.1. Troubleshooting
7.3. Log In
8. Next Steps and Where to Go From Here
8.1. Shutting down the system
8.2. If You Are New to Unix
8.3. Orienting Yourself to Ubuntu
8.3.1. Ubuntu Packaging System
8.3.2. Additional Software Available for Ubuntu
8.3.3. Application Version Management
8.3.4. Cron Job Management
8.4. Further Reading and Information
8.5. Setting Up Your System To Use E-Mail
8.5.1. Default E-Mail Configuration
8.5.2. Sending E-Mails Outside The System
8.5.3. Configuring the Exim4 Mail Transport Agent
8.6. Compiling a New Kernel
8.6.1. Kernel Image Management
8.7. Recovering a Broken System
A. Installation Howto
A.1. Booting the installer
A.1.1. Booting from CDROM
A.1.2. Booting from network
A.1.3. Booting from CMS disk (z/VM)
A.2. Installation
A.3. And finally…
B. Automating the installation using preseeding
B.1. Introduction
B.1.1. Preseeding methods
B.1.2. Limitations
B.1.3. Debconf basics
B.2. Using preseeding
B.2.1. Loading the preconfiguration file
B.2.2. Using boot parameters to preseed questions
B.2.3. Auto mode
B.2.4. Aliases useful with preseeding
B.2.5. Using a DHCP server to specify preconfiguration files
B.3. Creating a preconfiguration file
B.4. Contents of the preconfiguration file (for focal)
B.4.1. Localization
B.4.2. Network configuration
B.4.3. Network console
B.4.4. Mirror settings
B.4.5. Account setup
B.4.6. Clock and time zone setup
B.4.7. S/390 specific disk storage
B.4.8. Partitioning
B.4.9. Base system installation
B.4.10. Apt setup
B.4.11. Package selection
B.4.12. Finishing up the installation
B.4.13. Preseeding other packages
B.4.14. Further S/390-specific Preseed Details
B.5. Advanced options
B.5.1. Running custom commands during the installation
B.5.2. Using preseeding to change default values
B.5.3. Chainloading preconfiguration files
C. Partitioning for Ubuntu
C.1. Deciding on Ubuntu Partitions and Sizes
C.2. The Directory Tree
C.3. Recommended Partitioning Scheme
C.4. Device Names in Linux
C.5. Ubuntu Partitioning Programs
D. Random Bits
D.1. Linux Devices
D.2. Disk Space Needed for Tasks
D.3. Disk Space Needed
D.4. Installing Ubuntu from a Unix/Linux System
D.4.1. Getting Started
D.4.2. Install debootstrap
D.4.3. Run debootstrap
D.4.4. Configure The Base System
D.4.5. Install a Kernel
D.4.6. Set up the Boot Loader
D.4.7. Remote access: Installing SSH and setting up access
D.4.8. Finishing touches
D.4.9. Create a User
E. Administrivia
E.1. About This Document
E.2. Contributing to This Document
E.3. Major Contributions
E.4. Trademark Acknowledgement
F. GNU General Public License

List of Tables

3.1. Hardware Information Helpful for an Install
3.2. Recommended Minimum System Requirements