If the updating process is running at startup for long periods of time, it may mean the Windows Updates have failed to download and install. Have you checked to make sure all updates are downloaded and installed.
And what tool are you using to determine disk usage?
Hope this helps.
I have a problem with win 10 having 100% disk usage all the time with no application visible that would actually produce that kind of load (maybe 5-10MB/sec tops). I tried everything I could find online about this issue:
* disabling services like superfetch and windows search
* disabling MSI on harddrive
* disabling preloading in chrome
* setting the page file to manual
* turning off windows tips
* turning off windows defender
However the 100% usage at startup remains and the system is noticeably slower because of it. However, after about half an hour or so, the disk usage goes back to the normal 2-40% range. I'm guessing this means it's not a hrdware issue either, but I'm at a complete loss now. Can anyone give some advice?