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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: alt.comp.os.windows-11,comp.os.linux.advocacy
Subject: Re: Microsoft admits that Windows is short-term support in realistic
 terms
Date: Fri, 21 Feb 2025 21:33:30 -0000 (UTC)
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On Fri, 21 Feb 2025 13:11:54 -0500, Paul wrote:

> On Thu, 2/20/2025 8:29 PM, Lawrence D'Oliveiro wrote:
>>
>> Why does Windows need to reboot about 5 times during an install?
>> Because nobody at Microsoft knows to reliably shut down and restart
>> their own services, so it’s easier just to reboot everything.
>>
> ...
> 
>     2) SafeOS phase:    ...computer is booted into Windows PE during the
>     SafeOS phase
>                             Now the computer has a known good OS, to
>                             continue the installation process

Here’s something else that wasn’t mentioned: on Windows, the running 
processes keep open files locked, so they cannot be upgraded. Switching to 
a minimal boot kernel isn’t so much about being “known good” as it is 
about avoiding locks on files that need to be upgraded.

> The logfiles go in a different place now.

Why? So that locks on files in that “different place” don’t matter for 
upgrading the regular OS.

> and somewhere in there, is the "Migration phase", where programs are
> reinstalled one by one.

Wonder why this is even necessary. A Linux distro can upgrade itself in-
place, without touching third-party stuff in /usr/local or /opt.