The issue appears to be a regression in memdisk (the part of syslinux which handles the floppy disk image loading); the regression seems to have occurred between versions 3.72 (the one bundled in UNetbootin 408) and version 3.73. I've reported the issue to the upstream syslinux mailing list.
The issue appears to be a regression in memdisk (the part of syslinux which handles the floppy disk image loading); the regression seems to have occurred between versions 3.72 (the one bundled in UNetbootin 408) and version 3.73. I've reported the issue to the upstream syslinux mailing list.