i've seen all the posts about using a USB bootable and the boot repair disk utility. my twist is that my pc i'm using for a server is too old to support booting from USB. And when i try 'try ubuntu now' from a v20.4 lts install disk, apparently it doesn't have support for the onboard video (too old?) as i get a purple screen with many, offset dashes on it. also, the boot repair utility won't let me create a cd-rom on my windows computer.
can anyone provide instructions or a prebuilt ISO with all the necessary tools to fix this?
thanks john