Steam Library - Move to New Drive or New Computer | 2021
Different methods depending on what you want to do.
Move to a new drive on the same computer - use Steam.
Move to a new computer - use Windows and Steam.
Steam is a database, moving games around on the same computer is best done internal with Steam so that it keeps track of everything.
If you are moving to a new computer and want to transfer all your games to a clean install of Steam, then copying everything using Windows is easiest.
The Steam library is straightforward but if you use the wrong method, then it can cause you all sorts of difficulties, trying to get the games recognised.
Timestamps
00:00 Introduction
00:26 New drive preparation
01:18 Same computer - new SteamLibrary drive
04:57 New computer - transfer SteamLibrary
08:48 Summary