When using traditional hard drives
Yes.
I should have been a bit more verbose.
Partitioning
used to be sort of a good idea. Single drives were the norm, and drive space was expensive.
OS on the first (outermost) partition. That is faster rotationally.
And (long long ago), you could reinstall the operating systems and NOT affect applications.
Today, since applications are so intertwined with the OS and Registry...you need to reinstall those as well with a new OS.
On an HDD, partitions are physical delineations. Literally different portions of the drive.
At a constant RPM, the outer tracks go past the heads faster.
On an SSD, the partitions you see are merely a logical visualization. The OS shows you the partitions. The physical drive does not care. All work at exactly the same speed. The drive firmware moves data around as it sees fit, for wear leveling and TRIM.
Space.
Trying to predict the needed sizes WILL end up in a lot of wasted space.
A 1TB drive, 200GB partition devoted to 'games'.
110GB consumed with 2 games. Leaving 90GB free space in that partition.
Want to install a 3rd game, of 95GB? Not gonna fit. That game partition is too small, and now needs to be adjusted.
Or, you install that 95GB game in some other partition. Negating the concept of "this one is for games".
And messing with partitions can lead to multiple variations of "oops".