I fried my computer trying to load Alpine Linux. Now I can't do anything.
I have Ubuntu. iso on a USB, is that all I need?
How do I run it from BOOT: prompt?
I think I formatted my drive and deleted my Windows Recovery disc too!
Simply placing the .iso on the USB drive is not enough. If you intend on booting from USB you will need to do two things - you will need to change your BIOS settings to allow booting from USB and you will need to make the drive bootable. If you have another computer available I suggest using UNetBootin to create a bootable USB drive with your preferred flavor of Linux