At the end of December 2022, a new version of Linux Mint 21.1 "Vera".
I decided to make a transition from the previous version 20.3 "Una".

Transition plan:

1) mark the section of the second (backup) hard drive for Timeshift
2) using Timeshift, take a picture of the working operating system on the backup hard drive.
3) updating the Linux Mint operating system using the standard function in the “Update Manager” application.

1. Marking второго жесткого диска в файловую систему EXT4 для TimeShift

Previously, I planned to use the section for copying files (disc backUp), therefore, the file system format was not Ext4, but another. I had to format the section on the reserve disk in Ext4.

1) launch GParTed

Password entering Root:

The main GP windowarTed

2) I defeated the disk that I used with a mounting point //mnt/backUp.
(Other users may not be blocked by the second disk - then we miss the step).

3) At the next steps, I deleted the Exfat section and created Ext4.

4) agreed to change the file system and waited for the completion of the execution.

5) All changes are applied to the second hard drive. I close the window.

2. Using Timeshift to create a picture of the operating system

To be able to return the PC to its original state, I used the Timeshift utility.

"Start - System - Timeshift"

Pictures can be created either on the working section, or on another disk with the Ext2, Ext3 or Ext4 (Linux) file system.

I enter the Root password

Creating an OS picture in Timeshift

1. The main window Timeshift:
   

2. In Timeshift in the "Settings" menu I chose a place for storage - the second hard drive
   

3. Now everything is ready to create an image. I start!
   
   Press the "Create" button
   

4. Wait for the end of the execution
   
   Start:
   
   Continuation:
   

Ending of work. A picture of the system in Timeshift is created.

3. Linux Mint update until the next version

1. Preparation.

It is advisable to turn off the PPA-re-repositories, because When updating, an error may be issued.

"Start" - "parameters" - "update manager"

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It is advisable to turn off the PPA-REPROSITION TEELG hereram
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A third-party PPA-Ro-Posterior is also used for the source of the Apache web server application.

Otherwise, there will be a warning in the process of updating the version, the next type (see step 16).

2. Update

Step 1. Before switching to the version, be sure to install all package updates in "Start - Settings - Update Manager"

Step 2. Take a snapshot of the current system in TimeShift

Step 3.

Step 4.

Step 5. Snapshot created. (Size is 24 GB)

Step 6. Launch the update manager in "Start - Settings - Update Manager"

Step 7. Select the menu item "Edit" - "Update to Linux Mint 21.1 Vera"

Step 8. Start the update process. Welcome screen.

Step 9. Start the update process. Greeting

Step 10: On the next window you can read the release notes.

Step 11: Read the release notes (opens in browser)

Step 12. I continue reading "What's New" and close the browser.

Step 13. Start the upgrade process: check the box "I accept the risk. I want to upgrade to ..."

Step 14. For administrative actions related to the update, you need to enter the root password

Step 15. The update process is in progress

Step 16. A warning may be displayed if PPA repositories are not disabled

This error like "W - warning", so the update process will be long.
Step 17. The update process begins with downloading packages

Step 18. Progress of the operating system update process

Step 19. Progress of the operating system update process

Step 20. Progress of the operating system update process

Step 21. Progress of the operating system update process

Step 22. Completing the Linux Mint operating system update

Step 23. Reboot the OS

After the update I decided to perform usrmerge - a program that separates the directories /bin and /usr/bin

Step 24.

sudo apt install usrmerGE

Preparing to unpack …/usrmerge_25ubuntu2_all.deb …
Unpacking usrmerge (25ubuntu2) …
Configuring usrmerge package (25ubuntu2) …
Smartmatch is experimental at /usr/lib/usrmerge/convert-usrmerge line 172.
The system has been successfully converted.

Step 25. Creating a system image in TimeShift

Step 26. TimeShift - 1

Step 27. TimeShift - 2

Step 28. TimeShift - OS snapshot creation after update completed

It remains only to switch to a faster local mirror in the program
"Start - Parameters - Update manager"

Step 29. Updating version. Switching to local mirror
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After the transition to a new version, problems with OS or programs did not occur, everything works as before.

Full list of changes in the new version of Linux Mint 21.1 "Vera"Contained in the PDF: file
New_Features_in_Linux_Mint_21.1_Vera.pdf
The main differences:

• Linux 5.15 core, Ubuntu package base 22.04, shell XFCE 4.16.
• Complete integration into the distribution of the FL packages control systematpak
• Driver manager allows you to add Dummy "Package for testing
• changed the mouse pointer to the triangle Bibata (but you can leave the usual arrow mouse pointer)
• New customization of the desktop - color change in the XFCE shell
• The theme of icons Mint-y-legacy-The classic topic mines is preserved
• The computer, the garbage basket and the network environment are removed for a more "clean" and modern type of desktop. They can be called through a file manager.

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