After preparing the installation media, we need to make sure we can access the console(either via keyboard and [virtual]monitor or serial connectivity). Next we need to knowhow to access the boot menu or the system bios (UEFI) to boot from the installation media. Most times will be a function(F#), Del, or ESC key that needs to pressed immediately after powering on (or rebooting) the system. Usually within thefirst 2 to 3 seconds from powering up.