I have a dual boot computer running Windows 10 and Ubuntu (two partitions on my hard drive). The boot program is Grub2.
I also have a USB disk with Ubuntu install files on. What I want to do, is remove Windows 10 and Ubuntu, and just install the Ubuntu from install files on the USB. What is the process to follow? I'm a bit afraid of re partitioning in Windows and then finding I've mistakenly uninstalled Grub2 and can't launch?