grub-efi-amd64-signed安装失败，怎么解决

方法/步骤1删除grub-efi-amd64安装grub-pc2挂载/devsudomount/dev/sdb3/mnt3sudomount-tprocnone/mnt/proc4sudomount-obind/dev/mnt/dev5sudochroot/mnt/bin/bashapt-get-yremovegrub-efi-amd-646apt-get-yinstallgrub-pcgrub-install--recheck--target=i386-pc/dev/sdbupdate-grub7最后就是umount了