I have just upgraded from Ubuntu 18.04.4 LTS (Bionic Beaver) to Ubuntu 20.04 LTS Focal Fossa.
There is the official graphical way to upgrade. I have used that. https://ubuntu.com/tutorials/tutorial-upgrading-ubuntu-desktop#1-before-you-start
At the end I had two packages that didn't install - the grub-efi-amd64-signed was one of them. The package number is 1.142+2.04-1ubuntu26.
I have an AMD64 processor - namely AMD Quad-Core A4-6210.
Other error message: E: Sub-process /usr/bin/dpkg returned an error code (1)
I have just upgraded from Ubuntu 18.04.4 LTS (Bionic Beaver) to Ubuntu 20.04 LTS Focal Fossa.
There is the official graphical way to upgrade. I have used that. /ubuntu. com/tutorials/ tutorial- upgrading- ubuntu- desktop# 1-before- you-start
https:/
At the end I had two packages that didn't install - the grub-efi- amd64-signed was one of them. 04-1ubuntu26.
The package number is 1.142+2.
I have an AMD64 processor - namely AMD Quad-Core A4-6210.
Other error message:
E: Sub-process /usr/bin/dpkg returned an error code (1)