Incredibly Slow Boot-Up Following Windows 10 1709 Update

[bethjm]

It's mostly solid but flashes occassionally. A quick look at task manager reports 99-100% disk usage with System taking up nearly all of it.

[Zinou]

Yes it's a good sign. this command is executed in kernel mode (System).

[bethjm]

Glad to hear! I shall leave it running then and report back to you either when the whole process has completed or if it has been more than a few hours and there has been no change. Again, thank you for your help!

[bethjm]

OK, I believe the command has finished now. It kept saying 2/6 but it has now stopped. And I believe you've solved my problem! The latest restart only took two minutes for my computer to be fully booted, OneDrive synced, and everything ready to go! Start-up more resembles more what it used to and is now faster than another HP computer that I was using as a control. 

I cannot thank you enough!

[Zinou]

I'm glad to helped you solve your problem 😉

Can you take another boot trace to confirme every think is ok with the prefetcher and see if we can improve the boot time and move it under 2 min.

[bethjm]

Here's the latest trace:

www.transfernow.net/32hsg8i217b0

[Zinou]

This last trace was not correctly recorded ! sometimes it happens...

Can you take another one with these parameters, it will reduce the file's size.  https://justpaste.it/1fevp

[bethjm]

Hi,

So I've tried re-recording the trace three times with the settings you specified but I keep getting a message that says "This trace has dropped events. Please record this trace again."

I haven't done anything differently to how I recorded the first one so I'm not quite sure what is happening here.

[Zinou]

Maybe the xbootmgr command didn't complete the 6 boot correctly ! 

try to restart your system 3 more times before you take another boot trace...

[bethjm]

Restarted the computer three times and then tried to take another boot trace, but same problem with dropped events!