uos@UOS:/Desktop$ sudo -i
root@UOS:# sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo: add-apt-repository：找不到命令
root@UOS:# mount /dev/nvme0n1p1 /mnt
root@UOS:# mount /dev/nvme0n1p8 /mnt/boot/efi
mount: /mnt/boot/efi: mount point does not exist.
dmesg(1) may have more information after failed mount system call.
root@UOS:# mount /dev/nvme0n1p8 /mnt
root@UOS:# mount /dev/nvme0n1p1 /mnt/boot/efi
root@UOS:# mount -t proc proc /mnt/proc
root@UOS:# mount -t sysfs sys /mnt/sys
root@UOS:# mount -o bind /dev /mnt/dev
root@UOS:# mount-t devpts/mnt/dev/pts/
-bash: mount-t：未找到命令
root@UOS:# mount -o bind /dev /mnt/devmount -o bind /dev /mnt/dev
mount: bad usage
Try 'mount --help' for more information.
root@UOS:# mount -t devpts/mnt/dev/pts/
root@UOS:~# chroot /mnt
root@UOS:/# grub-install /dev/nvme0n1p1
backend_syslog.go:30: syslog is not available: Unix syslog delivery error

Deepin 20.8恢复WINdows后添加Linux引导后Linux启动不起来。

有没有专门的修复工具呢？网上的方法试便了都不能完美修复。