unetbootin provides a .desktop file, attached patch to the ebuild installs it for me
Created attachment 208892 [details, diff] ebuild patch to install unetbootin desktop file
here is my sislinux.cfg default vesamenu.c32 prompt 0 menu title UNetbootin timeout 100 label unetbootindefault menu label Default kernel /ubnkern append initrd=/ubninit root=/dev/ram0 init=/linuxrc dokeymap looptype=squashfs loop=/image.squashfs cdroot vga=791 label ubnentry0 menu label gentoo kernel /gentoo.efimg.mountPoint/gentoo append initrd=/gentoo.efimg.mountPoint/gentoo.igz root=/dev/ram0 init=/linuxrc dokeymap looptype=squashfs loop=/image.squashfs cdroot vga=791 label ubnentry1 menu label gentoo-nofb kernel /gentoo.efimg.mountPoint/gentoo append initrd=/gentoo.efimg.mountPoint/gentoo.igz root=/dev/ram0 init=/linuxrc dokeymap looptype=squashfs loop=/image.squashfs cdroot label ubnentry2 menu label memtest86 kernel /isolinux/memtest86 append initrd=/ubninit
ops, wrong thread, sorry
Thanks. This is fixed in -r1.