Pretty. :) Gives me PTSD-like flashbacks to the time when I was tasked with installing Windows 95 on 50+ computers on the local school. For the young(er), Windows was on 14-ish 3.5" floppy disks, and I had to do some heavy calculation and logistics copying those discs while installing the OS to make my effort as efficient as possible. IIRC, I managed to keep the installing cyclus going on 28 computers at a time, and…
Back in those days re-formatting and re-installing Windows was a very common thing because usually the system would get into some kind of bad state after several months of usage (or at least mine did). I believe I only had a Windows 98 'Upgrade' CD, which could not be used to install on a bare system. This meant I had to first install a previous copy Windows, which in my case was Windows 95 on floppy disks (and I fee…
As I recall it, there was actually a minimal set of files needed to trigger the CD to install and you didn't actually need a full 95 install. I worked at a shop at the time and remember doing a lot of reinstalls from those upgrade disks and we definitely didn't spend the time to reinstall both OSs.
I tried searching and the closest I could find was that win95 upgrade would do a full install if you told it to find the old win3.1 on the win3.1 install floppy. I vaguely remember doing something similar, so either it was those versions (unlikely, but possible) or later versions had the same trick.
We definitely did a lot of full windows installs from the upgrade disks without installing the full previous OS first.