原始系统驱动器是 1TB NVME M.2 SSD。运行 Ubuntu 22.04。使用 DCFLDD 创建了一个映像文件，该文件在上述系统上运行 Live USB。将映像文件移动到另一个系统，并成功将其还原到 1TB 外部 2.5 SSD 驱动器。使用 Gparted，我验证了分区看起来相同并且能够访问数据。当我尝试从克隆的驱动器重新启动时，Ubuntu 徽标首先显示一段时间，然后出现黑屏，显示：
You are in emergency mode.
After logging in, type "journalctl -xb" to view system logs, "systemctl reboot" to reboot.
我还上传了失败的启动尝试的 journalctl 输出：
pastebin.com/A7YF1cMh
这里的问题是什么？我如何登录查看系统日志并找出问题的原因？
启动修复启动信息摘要摘录：
=> No boot loader is installed in the MBR of /dev/sda.
=> No boot loader is installed in the MBR of /dev/sdb.
sda1: __________________________________________________________________________
File system: vfat
Boot sector type: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/BOOT/fbx64.efi /efi/BOOT/mmx64.efi
/efi/ubuntu/grubx64.efi /efi/ubuntu/mmx64.efi
/efi/ubuntu/shimx64.efi /efi/ubuntu/grub.cfg
sda2: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 22.04.2 LTS
Boot files: /boot/grub/grub.cfg /etc/fstab /etc/default/grub
sdb1: __________________________________________________________________________
File system:
Boot sector type: -
Boot sector info:
sdb2: __________________________________________________________________________
File system: vfat
Boot sector type: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/BOOT/fbx64.efi /efi/BOOT/mmx64.efi
/efi/ubuntu/grubx64.efi /efi/ubuntu/mmx64.efi
/efi/ubuntu/shimx64.efi /efi/ubuntu/grub.cfg
sdb3: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 16.10
Boot files: /boot/grub/grub.cfg /etc/fstab /etc/default/grub
sdb4: __________________________________________________________________________
File system: zfs_member
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 22.04.1 LTS
Boot files: /boot/grub/grub.cfg /etc/fstab /etc/default/grub
================================ 3 OS detected =================================
OS#1: Ubuntu 16.10 on sdb3
OS#2: Ubuntu 22.04.2 LTS on sda2
OS#3: Ubuntu 22.04.1 LTS on sdb4
Suggested repair: ______________________________________________________________
The default repair of the Boot-Repair utility would reinstall the grub-efi of
sda2,
using the following options: sda1/boot/efi
Additional repair would be performed: unhide-bootmenu-10s use-standard-efi-file
Final advice in case of suggested repair: ______________________________________
Please do not forget to make your UEFI firmware boot on the Ubuntu 22.04.2 LTS entry (sda1/efi/****/grub****.efi (**** will be updated in the final message) file) !