I followed these instructions and created a bootable USB disk. When booting from it on my Macbook, nothing happens, the screen turns black. What should I do? I tried it multiple times with a NET and a full DVD image.
Hi and welcome to the Forum
What model MacBook? If you press the e key at grub and at the linuxefi at the end of the line (after quiet) add nomodeset and press F10 to continue to boot and see if that helps.