deepin在sdb5 ubuntu17.10在sdb6
sda是固态硬盘怎么把deepin的grub安装sda的主引导,现在是ubuntu的grub启动

在ubuntu使用下面的命令可以安装上去,在deepin下却不行


cheng@cheng-PC:~$ sudo update-grub
[sudo] cheng 的密码：
Generating grub configuration file ...
Found theme: /boot/grub/themes/deepin/theme.txt
Found background image: /boot/grub/themes/deepin/background.png
Found linux image: /boot/vmlinuz-4.9.0-deepin13-amd64
Found initrd image: /boot/initrd.img-4.9.0-deepin13-amd64
Found linux image: /boot/vmlinuz-4.9.0-deepin12-amd64
Found initrd image: /boot/initrd.img-4.9.0-deepin12-amd64
Found deepin image: /boot/deepin/vmlinuz-4.13.4
Found initrd image: /boot/deepin/initrd.img-4.13.4
Found Windows Boot Manager on /dev/sda2@/efi/Microsoft/Boot/bootmgfw.efi
Found Ubuntu 17.10 (17.10) on /dev/sdb6
Adding boot menu entry for EFI firmware configuration
done
cheng@cheng-PC:~$ sudo grub-install /dev/sda
Installing for i386-pc platform.
grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible.
grub-install：错误： 无法嵌入，但在跨盘安装时是必须的.