grub-mkrescue: warning: Your xorriso doesn't support `--grub2-boot-info'. Some features are disabled

安装xorriso 重新执行grub-mkrescue -o myos.iso isodir 得到如下输出：

xorriso 1.4.2 : RockRidge filesystem manipulator, libburnia project. Drive current: -outdev 'stdio:myos.iso' Media current: stdio file, overwriteable Media status : is blank Media summary: 0 sessions, 0 data blocks, 0 data, 189g free Added to ISO image: directory '/'='/tmp/grub.RLwvLg' xorriso : UPDATE : 282 files added in 1 seconds Added to ISO image: directory '/'='/home/lee/simpleos/src/isodir' xorriso : UPDATE : 286 files added in 1 seconds xorriso : NOTE : Copying to System Area: 512 bytes from file '/usr/lib/grub/i386-pc/boot_hybrid.img' ISO image produced: 2559 sectors Written to medium : 2559 sectors at LBA 0 Writing to 'stdio:myos.iso' completed successfully.