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Ubuntu Server 25.04 Download Installation Image
Ubuntu 25.04 “Plucky Puffin” Release
Ubuntu 25.04 “Plucky Puffin” was released on April 17, 2025 (local time).
The installation media for Ubuntu Server can be downloaded from the official site on the Internet. As long as you have a fast connection, you can download the OS itself in about 2 to 3 minutes. You will need to create an installation CD/DVD from the downloaded iso file. (approx. 1.9G)
The iso file itself can be used for installation on a virtual machine using Vmware or other software.
Download Site
https://releases.ubuntu.com/plucky/
For general use, this version is an intermediate release provided between LTS and LTS and should be assumed to be “transferable to the next version within 9 months”.
If you expect to use it for a longer period of time, use 24.04.2.
Ubuntu Server 25.04 Install
Change the BIOS so that the PC can boot from the installation disk created above.
1.Installation screen
①Select a language and press [ENTER],
There seems to be no Japanese, so proceed in English.
②Keyboard Selection
Move the cursor to Layout and press [ENTER] key
Select "Japanese" in the keyboard layout and press the [ENTER] key
The cursor can be moved with the [Up/Down Arrow] keys or the [Tab] key.
Press "Done" when the keyboard layout has been selected.
➂Select "Ubuntu Server" as the installation type.
④Network settings (using a static IP address)
Select the NIC you are connecting to and press [ENTER]
Select "Edit IPv4" and press Enter
Then select "Manual" on the next screen and press Enter
Fill in the required information.
Let's take the case where the local IP address of the server is "192.168.11.83" as an example
Method : Manual
Subnet : 192.168.11.0/24
Adddress : 192.168.11.83
Gateway : 192.168.11.1 (Usually router address)
Name Servers 192.168.11.1 (Usually router address)
Search domains Your own domain to be applied to the server
Select "Save"
⑤Confirm that the IP address is correctly assigned and select "Done"
⑥If you are using a proxy server, enter the proxy server information.
If you do not use a proxy server, leave blank and select "Done".
⑦Selecting a Mirror Site
Select Japanese mirror sites as much as possible. By default, mirror sites with jp will be displayed.
Enter "Done" as it is.
⑧Set the destination disk configuration
This time, set to automatic configuration.
Mark [Use an entire disk] if you want to set it automatically, then Done,
⑨Select "Done" on the confirmation screen
⑩Select "Continue" to confirm formatting
⑪Enter [User Name], [Host Name], [Password], etc. and select [Done]
Your name : any name
Your server’s name : Host name to distinguish it from other computers
Pick a username : General user name to log in to the server
Choose a password : Password to log in as a general user
Confirm your password : Same as above Password
⑫Install SSH server
Mark "Install Openssh server".
Select "No" because SSH Key is not required, and Done
⑬Selecting packages to install
Since nothing is selected this time, Done as is.
⑭Installation status will be displayed
Select "Reboot NOW" after installation is complete
⑮Ubuntu will boot and the console will appear. If you can log in, the installation was successful.
