dCore and UEFI-Only issue fixed

[PDP-8]

Without repeating the whole thing here, I found the issue I was having with TC and dCore on UEFI-ONLY boxes:

http://forum.tinycorelinux.net/index.php/topic,24104.0.html

The gist of it is that the TC iso's are very strict when it comes to bios "optical boot" selections, whereas most other distros don't seem to care.

[PDP-8]

Actually, to be more precise, the dCoreFocal64 RC candidate, was tested like I did with Tinycore on my Intel NUC in uefi-only mode.

The RC did NOT care about whether or not the uefi-exception of "optical boot" was enabled or not. and booted regardless.  So thanks for that - that also means my ultra-modern mini-pc which has no ability to select/deselect 'optical boot", and will not boot optical by default, has no problem with Focal RC booting either from a usb stick either!

Earlier releases like Buster were just not bootable in uefi-only mode, but that wasn't my main concern since there are other front-end ways to force it to do so.