One argument : I would set the root directory to 100Go in today’s conditions (the new packagers like Flatpak & snap quickly increase the / use), here my 2 month old cleaned install :
I already happened to go over 60G of used space (before a large clean session)
But I also test a lot of new packaged apps.
Anyhow, the / use trend is up, thus it’s safer to use “a lot” than to have to repartition later on !
I use the same size for my Debian.
I’m going to flag this conversation for mod attention to be split off into the Support - Installation, Boot and UEFI category as this is something we could take up in a [HowTo] tutorial…
OK, we’ve split off the question about sizing from the main topic that was being discussed!
I’ve written about this previously for my previous OS and based that article on research: what vendors recommend as “minimum” and “recommended”
However, as we both now those are too low for power users and as you pointed out users that test systems have even higher demands of their system.
Are you sure the current version if Discourse used on this forum supports this, or is it even enabled? Because I followed the guide you liniked for this forum and it doesn’t seem to function…