Ubuntu existing packaging systems, a migration to another identical hardware machine.
https://zhuanlan.zhihu.com/p/51827233
https://blog.csdn.net/vah101/article/details/6117563
https://www.cnblogs.com/liangxiaofeng/p/5105803.html
https://blog.csdn.net/sinat_20276189/article/details/52061684
https://www.zhihu.com/question/23550316/answer/255015365
https://blog.csdn.net/sunny0660/article/details/79274642
The three hard drive 3 mounted to the folder, and then made into a file squas, filesystem.sqs to replace the original file, and
Do some adaptation.
grub-install fixes
https://blog.csdn.net/aukomn/article/details/50704293
https://unix.stackexchange.com/questions/405472/cannot-find-efi-directory-issue-with-grub-install
https://www.xiexianbin.cn/linux/disk/2018-04-13-linux-fstab/ swap of uuid is also a problem, fstab, but does not seem to affect the boot