Future Windows updates will take longer to install, but it’ll feel quicker
Found on Ars Technica on Tuesday, 20 March 2018
Thanks to a new upgrade process, the next update—expected to be released in April—should result in substantially less downtime. The install process is split into two portions: the "online" portion, during which your PC is still usable, and the "offline" portion after the reboot, during which your PC is a spinning percentage counter.
Microsoft estimates that the Creators Update, released almost a year ago, would take about 82 minutes on average during the offline phase. Improvements made in the Fall Creators Update cut that to about 51 minutes, and the next update (which still hasn't actually been blessed with an official name) will cut this further still, to just 30 minutes.
At the same time, you can do a major update in Linux within 5-10 minutes at most, including an optional reboot (what is not a bad idea after a kernel or glibc update). You could even invest another 5 seconds to create a LVM snapshot of your root volume to roll back in case anything goes wrong. It's just baffling how much MS has screwed up here and annoyed its userbase. Forced updates and reboots are simply not an option.