It's a strange title I know...
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Main idea:
In Ubiquity (Ubuntu live installer) if you choose "I'll set partitioning myself" there should be an predefined option with home on different partition. And other options.
After choosing one of this options you set the partitions size which have recommended size for partition depending on size of your disk, or at least minimum recommended size.
there should also be an option to choose file system for all partitions simultaneously.
Background of this idea:
I just re-installed Kubuntu (if you want to know why ask in comments). And I decided to make a special partition for Home and one for root.
I was sure this will be easy, I mean I did the same thing in Arch how much harder can it be in (K)Ubuntu?
Well I was wrong I guess that GUI isn't everything.
Arch has a much more user friendly way of setting up partitions, even though the whole thing is done in CLI.
It gives you recommended amounts and if you decide that you want to have a bigger or smaller /home it accounts this change to other partitions.
The Ubuntu (Ubiquity) partition manager is just very messy I don't even know if I set it the right way.
Anyway I want it to be more "simple" like in Arch.