I can't boot it. All get is
j_
(the _ is flashing)
try this
PLoP Boot Manager v5.0
http://www.plop.at/en/bootmanagers.htmlYou need to edit USB sdX1 partition FAT32 to some other FAT32 who support your MB. Then mount img file on USB.
It will be supported for oldest mainboards on SMOS 2GB USB.