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I currently have 16.04, but want to start fresh so that I can clean the hard drive, which is partitioned -- it includes an old version of an MS OS -- that I want to delete.

I created a bootable USB. Even after several reboots of the computer, pressing F12 then Esc, F2, and F10. The boot menu still does not appear.

M. Becerra
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user835886
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  • How did you create the USB? I use Etcher and it works well. – Katu May 31 '18 at 07:18
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    On some computers we need to change the bios configuration to accept boot from USB in order to boot from it. If the problem is that Ubuntu is not starting when you turn on the computer I only see three possible reasons: 1- you need to change your bios configuration; 2- the image isn't properly recorded on your USB device; 3- your computer can't boot from USB (this one is very unlikely). – Rafael Muynarsk May 31 '18 at 07:26
  • Have you checked the iso file with md5sum? 2. You can try again to clone/flash from the iso file to the USB drive according to this link; 3. Look for a hotkey to get a temporary boot list (like you already tried with F12 etc; 4. Change the boot order of hard disk drives (the USB pendrive can be seen as as hard disk drive because both are 'mass storage devices') in the UEFI/BIOS system of the computer.
    • – sudodus May 31 '18 at 09:25