Trying to install on J3455B mobo, linuxcnc installation usb not bootable

486sx Compaq laptop. When I still had Dial up I was using it as a router/firewall.
Toshiba 100MHz laptop
Some P2 & P3 Dell laptops
Some random P2 & P3 & P4 & Core 2 desktops I've found on the road.
A HP Laser Jet 4 that I found on the road.

And one of these from about 1984, yes with new batteries it still works.


And building one of these from a magazine series from the early 80's


And I'm collecting the bits & pieces to build a Cosmac Elf from the 70's.
Yeah I'm a nerd.

And to prove I'm truly mad and should be locked up I'm building (almost) a Myford lathe from parts bought off ebay or online retailers. Bed is a 1953 ML7 that is still within spec, no marking to indicate it has been reground, the rest is basically S7 bits. A part from some new hardware bits the only new bits are the 3 phase motor & inverter. Once the chip tray for the mill is finished I can the conversion to a stepper drive ballscrew for the lead screw.