I have a laptop with two HDD, Ubuntu 18.04 on one of them, no CD and only 2GB pen drive, so I can't fit 2.6GB 20.04 Ubuntu Desktop iso into it.
I want to install 20.04 Ubuntu Desktop to the second HDD alongside with existing 18.04 (I want some transition period to migrate smoothly from 18.04 to 20.04)
My idea is to make live USB for Ubuntu Server, install it and then manually install the desktop environment.
Is it easy to do?
Should I expect some important difference between "normal" Ubuntu Desktop 20.04 and Ubuntu Server 20.04 + pos-installed desktop?
Some missing software into desktop integrations? Any difficulties with drivers?
Or it's better to spend this time making some HDD bootable partition and turn it into "live HDD" and then install full desktop Ubuntu version?
Or maybe there is some easy way to "repack" Desktop Ubuntu iso and delete all the preinstalled software from it? To make it slimer and fit into 2GB..
P.S. Question title was renamed, initially it was about difference between ubuntu desktop and ubuntu server + post-installed desktop