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I have created a bootable USB with ubuntu 20.04.2.0 and followed the instructions on ubuntu.com. But when I boot it, after choosing the language, it takes me all the way to a screen asking if i want to "try ubuntu" or "install ubuntu". I moved with the arrows and choosed "install ubuntu" with enter key then it takes me to a black screen with ubunto slagon that shows loading.. after almost 2 minute it took me to another terminal black screen that shows several no medium found and state at the end:****unable to find a medium container a live file system attempt interactive netboot from a URL? Yes no (default yes): ****

mohamed
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  • Did you validate the ISO after download to ensure it was perfect? (ie. https://tutorials.ubuntu.com/tutorial/tutorial-how-to-verify-ubuntu#0) and then check the write to your media? I'm guessing you had issues with either, as the *no media found* error is trouble with your ISO which usually is the write to thumb-drive (bootable USB) in my experience, but it could be either. I'd return & validate your ISO & if that's good, re-write your media. – guiverc Jul 09 '21 at 12:52
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    Does this answer your question? [Is verifying ISOs downloaded from the official website worthwhile?](https://askubuntu.com/questions/993407/is-verifying-isos-downloaded-from-the-official-website-worthwhile) – guiverc Jul 09 '21 at 12:53
  • I have validated the download iso file and I have found no problem with it. Please how to check writing to media? – mohamed Jul 09 '21 at 14:05
  • In order to write Ubuntu iso file on USB, I used in the beginning the latest version of Rufus 3.14 which didn't work so I used an older version 3.13p which worked for writing process. I formatted the USB and rewrote the iso file but still the problem – mohamed Jul 09 '21 at 14:14
  • Checking media varies on release, on 20.04 you need only insert media & let it go and it'll validate itself ("*Checking disk 1 of 1 (99 % complete) Please Ctrl+C to cancel all filesystem checks in progress*") ... If it doesn't complete successfully you should not trust it (ie. don't use it). Don't skip the media check, and if it doesn't run - you likely have faulty media (a bad write). If I don't see the check/validation on one box; I usually boot the media & perform check on a different box.. if it fails or I don't see it there, maybe a third box otherwise I assume it's faulty. – guiverc Jul 09 '21 at 22:11
  • Your media was faulty (invalid data seen, thus it offered to treat media as netboot & download the ISO from the web for you..). Try another thumb-drive as thumb-drive media is cheap (*made to cost, no validation inbuilt*) where assuming good thumb-drive; about 5-8% of writes should fail in my experience. https://ubuntu.com/tutorials/tutorial-create-a-usb-stick-on-ubuntu#1-overview https://ubuntu.com/tutorials/tutorial-create-a-usb-stick-on-macos#1-overview https://ubuntu.com/tutorials/tutorial-create-a-usb-stick-on-windows#1-overview – guiverc Jul 09 '21 at 22:14
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    Does this answer your question? [Error when installing: "unable to find a medium containing a live file system"](https://askubuntu.com/questions/15425/error-when-installing-unable-to-find-a-medium-containing-a-live-file-system) – karel Dec 23 '21 at 02:03

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