The new version of Linux Mint 20 has been announced and along with it a User Guide (migrated from this tutorial) to help us in the migration process.
Now, there are two steps which trouble me:
1- Purge PPAs and 3rd party repositories, which says:
...
Click on Remove Foreign Packages.
Select all foreign packages and click Remove.
...
2- Delete foreign packages which, says:
With the exception of packages you want to keep, select all foreign packages and click Remove
When I check all of the foreign packages installed (from "Menu -> Administration -> Software Sources -> Maintenance -> Remove Foreign Packages") I see there is a LOT of them.
I'm able to recognize some of these packages, but I'm not sure about most of them.
So,
What are the implications of not Removing the Foreign Packages?
Related, What if I remove accidentally a package that is needed by some app later on? Can I recover it? (I guess so, but I'm not sure if it is safe to do so)
What may be the best way to approach this?
Side note:
- I executed
mintupgrade check
and the output seems fine to me. - I'm an intermediate experienced Linux user.