Ubuntu (Linux) installed system can not enter system problems after restoring backup

1. Intro:

　　

　　You can skip straight to see 3.~5.

We may be in a situation where we go from Ubuntu to another system and go back to Ubuntu.

For example:

Fedora upgrades a lot of bugs, Java-related software rendering is a bad force;

Linux Mint blew the sky Cinnamon in fact no comprehensive search, the response is particularly slow, each software (including shell) to appear after 2 seconds;

There is nothing but stability in the impregnable system of CentOS and Debian.

openSUSE software is particularly small, https://software.opensuse.org/find and hung up can only a face Meng force;

Want to support the domestic bar, Deepin from the WINDOWS10 there learned to force you to restart the update and restart the hang after the advanced technology;

Arch installed to half the gas to the keyboard to gnaw off, Manjaro said to solve what pain point but in fact respectability.

At this time, you think of the internal error of Ubuntu, although the GUI interface open for a week or so to hang off, but compare the above several, it is a reliable.

At this time you find that the hard disk has its backup, overjoyed.

2. I'm having a problem.

When you are flattered to reload, restore the backup, experience to find some software although in the hard disk, but can not be searched, you should learn to uninstall in apt reload.

When everything is ready, you have to start again, you can't get in, you have to doubt your life.

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3. What is the problem:

You have a large chance of seeing the following error:

failed to start remount root and kernel file system

It means: Mount the root directory and the core failure.

4. Problem principle:

Because after you restore the backup, Ubuntu has turned on the past to turn on the Mount list to restore back.

You re-installed the system, various partitions of the UUID have changed, Ubuntu is not partitioned, naturally into the system.

This is like you move, to express the old address, courier will definitely send not arrived AH.

5. How to Solve:

(1) Enter the Live CD (the one you installed on Ubuntu) or another Linux system

(2) Open terminal, enter sudo blkid, view uuid for all partitions

(3) Enter your normal access to the system's root partition under the/etc folder , open the terminal in the folder, input sudo gedit fstab (or sudo vi fstab) modified Fstab

(4) Modify each partition in Fstab to each UUID under the blkid instruction (equivalent to repartitioning back)

(5) Save, restart, should be successful.

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6. Say One more thing:

The above methods may be valid for all Linux systems.

Ubuntu (Linux) installed system can not enter system problems after restoring backup