this post was submitted on 12 Feb 2025
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iiiiiiitttttttttttt

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you know the computer thing is it plugged in?

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[–] [email protected] 2 points 21 hours ago

I'm super late, but: Yes, with "Fast Startup" enabled, a Windows machine will do a hybrid shutdown, when you choose "shutdown". It will shut down userspace and hibernate the kernel. Upon boot it will load the kernel from hibernation and then start a fresh userspace on top.

Of course if you had any issues in, for example, a sound driver, then that bad state will get loaded back in too. And the uptime counter is also part of the kernel state that gets loaded back in.

If you choose "reboot" it does a standard shutdown and at the last step writes to the ACPI reset register so the mainboard does a reset and directly starts booting again. Then both kernel and userspace are started fresh.