> Windows 10 takes 30 minutes to update. What could it possibly be doing for that long? Backing up the old Windows folder, decompressing (I guess downloadable

> Windows 10 takes 30 minutes to update. What could it possibly be doing for that long? Backing up the old Windows folder, decompressing (I guess downloadable updates use something very efficient in terms of compression like lzma), and probably some sleep() — I guess the update being slower makes users feel like it's something substantial. > Android system with no apps takes almost 6 Gb That "System" figure is the size of all partitions that aren't data. Quite a lot of that is literally wasted space.