I have just had a gigantic failure of upgrade and I am in desperate need for help.
I tried to follow the instructions to upgrade ubuntu 18.04 to 20.04. But when the process was showing 'connecting to server' at 0%, I stupidly pressed ctrl+c to stop it. This caused significant problems.
I rebooted the system, now i dont even have the right ubuntu version. I cannot describe it properly because the system is behaving very strangely. For example
- the interface, all icons are gone.
- i can still log on to the system, but I cannot see any icons, which are still there because if you move your mouse cursor on top of them, the text appears
- i cannot use almost anything except chrome. For example, as soon as I click 'terminal' it logs me off. I cannot open file browser, etc...
I think I really need help to know
- can I still undo the installation to revert back to my previous system?
- if not, can I still have a safe way to access the file system and get all my data out?
Any tips highly appreciated!!
UPDATE
I have followed this link Upgrade from 12.04 LTS to 14.04 LTS crashed, Now I have no access to my Ubuntu system
- Boot into recovery mode Select the network option. Once that's done
press enter to return to the recovery menu.
- Select the dpkg option. This produces the output
An upgrade from bionic to focal is not supported with this tool
- Press enter to return to the recovery menu. Select the root option and type in
do-release-upgrade and then apt-get update && apt-get upgrade && apt-get dist-upgrade
But then I got a series of errors. Please see the screenshot attached showing what I tried and the messages:
Basically it had problems with installing chromium. It says that a 18.04 version is installed but a 20.04 version is needed for dependencies. But when I tried to follow the advice to install it, it did not work, creating an error: cannot perform operation mount --rbind /dev /tmp/snap.rootfs_j61Tex//dev no such file or directory
I then searched this error, and someone suggested checking snap version, and here it is:
Any suggestions how I can continue please?
UPDATE 2
So I am following guiverc's suggestion in the comment and trying to follow the installation process by choosing 'something else'. And I have the first screen below. However, I am not sure how to configure this step, as when I click 'continue', I got the second screen error. And when double clicking some of the existing partitions I get a menu, but I am not sure how to select the options (screen 3)
