Announcing Windows 10 Insider Preview Build 15019 for PC Insider

Hi,

Winuser said:

On all of my computers I have never seen any Pros with Fast Start. With every new build released one of the first thing I do is turn off Fast Start. Using the powercfg /h off command I hope it stays off.

Especially when using a SSD as a boot device.
Doesn't make any meaningful difference and the hiberfil.sys file just takes up space for no good reason.

Cheers,

AndreTen said:

I find it useful on my laptop. Hibernation is kinda deep sleep. Working on a complex set of documents, open apps programs etc. I just hate to set them up every time I change location. Close the lid, go to meeting and open a lid of laptop. Everything is there like it was before...

Agreed. :)

The Hibernation function makes more sense on a laptop (or other portable device).

On all of my PCs, including the laptop, I use Sleep.
Obviously I normally only use one PC at a time, so the others are normally powered off.

Excellent article @linw, thanks.

15019 + a defender update finally showed up for me this afternoon. D/L seemed like 5 sec or less but initializing lasted about an hour. UUP was off. Progression was normal up to the point I was expecting a "restart" the defender update started downloading and installed and when it was done.....Nothing was present. No restart option at all??? Waited a while, then did a recheck for updates, said I was up to date. Rebooted and checked again, I was up to date??? Looked at the UPP register settings, WindowsUpdate =1, orchestrator = 0. Recycled the register settings back to 0. Checked updates again, and 15019 showed up progressed rather fast to "Restart" and the install completed as normal.

So far the notification panel is not populated with any text, completely blank, same as last build, transparent. After I did a reflect backup, checked the UUP register entries and WindowsUpdate =1, orchestrator = 0. I don't think this is normal is it??? I thought somewhere in this thread, both had to be the same.

UPDATE: After the 3rd manual restart, the notification panel is now back to normal.

Wynona said:

We don't want Fast Boot, Marty. We want to turn it off, but if Hibernate has previously been turned off, the option to turn on or off Fast Boot is no longer there.

That's because if you kill hybernate, Fast Startup becomes unavailable (can never be "on").

Wynona said:

I think my lappy actually hibernates on its own, Andre.

However, what I'm talking about is this:

1. Hibernation is turned on = Fast Startup option is available to me.
2, Hibernation is turned off = Fast Startup option is unavailable to me.

If this actually holds true, then to me, it's gotta be a bug. I'm not gonna turn off Hibernation just to check it out, though.

No, it's not a bug; it makes perfect sense. If there's no hyberfil.sys, Fast Startup can't function.

Winuser said:

I think that's because Fast Start uses the hiberfil.sys file to work.

Correct.

To understand what this is/does (it was first introduced in Windows 8):
“Fast Startup (aka: hybrid boot or hybrid Shutdown) is a new feature in Windows 8 to help your PC start up faster after shutting down. When turned on, Windows 8 does this by using a hybrid shutdown (a partial hibernate) method that saves only the kernel session and device drivers (system information) to the hibernate (hiberfil.sys) file on disk instead of closing it when you shut down your PC. This also makes the hiberfil.sys file to be much smaller than what hibernate would use (often 4GB or more). When you start your PC again, Windows 8 uses that saved system information to resume your system instead of having to do a cold boot to fully restart it. Using this technique with boot gives a significant advantage for boot times, since reading the hiberfile in and reinitializing drivers is much faster on most systems (30-70% faster on most systems tested). If you have a motherboard with UEFI, then fast startup will be even faster.”

linw said:

This is a good reference to what is happening The Pros and Cons of Windows 10’s “Fast Startup” Mode

Thanks, Lin. Interesting reading. At least I understand it now. Don't like it, but I understand it.