I'm trying to install ubuntu from a USB stick. I did it on my old computer, using the same stick, but this time I've replaced 14.05 with 16.04. I've tried choosing both the try ubuntu without installing and install ubuntu options. I get the loading screen, but then I get into initramfs:
BusyBox v.1.22.1 (Ubuntu 1:1.22.0-15ubuntu1) built-in shell (ash)
Enter 'help' for a list of build-in commands.
(initramfs) unable to find a live medium containing a live file system
I've tried formating the USB again and checking that I have the 64-bit desktop version. Any ideas?