= Ubuntu/install =

https://ubuntu.com/tutorials/create-a-usb-stick-on-ubuntu#1-overview
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Creating a bootable Ubuntu USB stick is very simple, 
especially from Ubuntu itself, and we’re going to cover the process in the next few steps.
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3. Launch Startup Disk Creator
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We’re going to use an application called ‘Startup Disk Creator’ to write the ISO image to your USB stick. 

This is installed by default on Ubuntu, and can be launched as follows:
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 1.  Insert your USB stick (select ‘Do nothing’ if prompted by Ubuntu)
 2.  On Ubuntu 18.04 and later, use the bottom left icon to open ‘Show Applications’
 3.  In older versions of Ubuntu, use the top left icon to open the dash
 4.  Use the search field to look for Startup Disk Creator
 5.  Select Startup Disk Creator from the results to launch the application

== 日本語 ==
https://symfoware.blog.fc2.com/blog-entry-2442.html