grub2 引导
uEFI i386 —-> /efi/boot/bootia32.efi x86_64 —-> /efi/boot/bootx64.efi cfg搜索路径(first match): -1-> /boot/grub/grub.cfg -2-> ./grub.cfg grub2 模块 grub_platform= “pc” | “efi” grub_cpu= “i386"|"x86_64” 模块路径 /boot/grub/${grub_cpu}-${grub_platform} #……