In this tutorial you will learn:
- How to download Ubuntu 20.04 server ISO image
- How to create bootable installation media
- How to boot to Ubuntu 20.04 Server installation wizard
- How to install minimal Ubuntu 20.04 server
Software Requirements and Conventions Used
|Category||Requirements, Conventions or Software Version Used|
|System||Installed Ubuntu 20.04 or upgraded Ubuntu 20.04 Focal Fossa|
|Software||Ubuntu 20.04 Server|
|Other||Privileged access to your Linux system as root or via the
# - requires given linux commands to be executed with root privileges either directly as a root user or by use of
Ubuntu 20.04 Server Installation step by step instructions
- First step is to download Ubuntu 20.04 server ISO image. Ubuntu 20.04 Server ISO image is the only image release for various other architectures such as 64-bit PC (AMD64), 64-bit ARM, PowerPC64 and IBM System z. Select an appropriate architecture and download the
- Next, choose from which medium you wish to perform the Ubuntu installation. In case your intention is to install the Ubuntu 20.04 Server virtually using a hypervisor simply proceed to the next step.
Most beginners will find using DVD as bootable medium a simpler method. If this is your case use your current operating system to burn the previously downloaded ISO image to blank DVD medium. There are no specific settings you need to choose while burning the ISO image just look for "Burn ISO image" image feature when using your burning software. Alternatively, you can install the Ubuntu Server using a bootbale USB flash drive.
- Next step is to insert the bootable media into your PC and change bios settings to boot from your selected boot media.
The following tables should provide you with some hints on how to access your computer Boot Menu. You will need to hit different keys (or combination of keys) depending on your computer type. Here is the list of possible keys you may have to press depending on your system:
Access Hypervisor boot menu
Key combinations for accessing Boot Menu on Hypervisors Device Key Combination Comment Oracle Virtual Box
Automatically boots from ISO when attached via virtual machine settings VMware Workstation
Automatically boots from ISO when attached via virtual machine settings
Access BIOS legacy
Key combinations for accessing Legacy Boot Menu Device Key Combination Comment Acer
F12key most likely
Fn + F11
For ultrabooks from Samsung disable the fast boot option in BIOS/UEFI. See next section. VAIO
Access BIOS/UEFITo access BIOS/UEFI on your computer you will also need to hit different keys (or combination of keys) depending on your computer type. Here is the list of possible keys you may have to press depending on your PC:
Key combinations for accessing BIOS/UEFI Device Key Combination Comment Acer
F2key most likely
Other possibilities: on Pavilion -
Other possibilities: small button next to the Power button (if laptop) Samsung
For ultrabooks from Samsung it might be
- Let's proceed with the installation. Simply use the keyboard's navigational arrows and TAB key to navigate the Ubuntu 20.04 Server installation wizard.
- Filesystem setup allows your server to be configured across multiple storage devices and partitions. Ubuntu 20.04 Server wizard offers the following filesystem setup options:
- Use An Entire Disk
- This is the simplest filesystem configuration where all installation files as well as user home directories are a part of single (/) partitions.
- Use An Entire Disk And Set Up LVM
- Same as the above option however it uses LVM (Logical Volume Manager) to partition the disk.
- This option provides the most flexibility and lets the user decide on the appropriate filesystem layout.
If you have selected the
Use An Entire Diskoption to let the installation wizard partition your filesystem automatically, simply proceed to
For those interested in a simple
Manualfilesystem partitioning keep reading below.
For servers it is a good practice to set at least
/homedirectories on a different partitions. The reason is that servers are most likely to be used as multi-user systems or will provide number of services which if not set correctly, may from time to time go out of control. Detaching the
/homedirectories from the main system will provide more stability since the user or service disk usage will not affect any core system functions and performance.
/boot - 500 MB /home - 5 GB /var - 15 GB SWAP - 2 GB / - 7.5 GB
To install any GNU/Linux system you need at minimum two partitions. First partition is the root partition
/which contains the entire system and
SWAPfor the virtual memory.