1 Loadlin
2 bootsect-loader (0x20, all other values reserved)
3 Syslinux
- 4 Etherboot/gPXE
+ 4 Etherboot/gPXE/iPXE
5 ELILO
7 GRUB
8 U-Boot
A Gujin
B Qemu
C Arcturus Networks uCbootloader
+ D kexec-tools
E Extended (see ext_loader_type)
F Special (0xFF = undefined)
10 Reserved