It's worth to mention standard "Startup Disk Creator" on Ubuntu · Issue #802 · raspberrypi/documentation · GitHub
![Linux USB Errors with usb-creator-gtk “stdin: I/O error stdin: error 0 /init: line 1: can't open /dev/sr0: No medium found” – Alex Sleat Linux USB Errors with usb-creator-gtk “stdin: I/O error stdin: error 0 /init: line 1: can't open /dev/sr0: No medium found” – Alex Sleat](http://alexsleat.co.uk/wp-content/uploads/2011/11/Screenshot-UNetbootin.png)
Linux USB Errors with usb-creator-gtk “stdin: I/O error stdin: error 0 /init: line 1: can't open /dev/sr0: No medium found” – Alex Sleat
![usb drive - Is there a way to install Ubuntu on usb pendrive as normal instalation (not live cd)? - Ask Ubuntu usb drive - Is there a way to install Ubuntu on usb pendrive as normal instalation (not live cd)? - Ask Ubuntu](https://i.stack.imgur.com/TThpF.png)