Re: UTC & Multiboot Vista

Stiphane Chausson wrote:
> Hi list
> 
> The registry setting given in faq8 is said to work for NT/2000/XP but it 
> also works with Vista.
> 
> Here's a small diff
> --- faq8.html	2008-03-16 17:51:53.000000000 +0100
> +++ faq8-vista-utc.html	2008-03-16 17:53:09.000000000 +0100
> @@ -1379,7 +1379,7 @@
>  <p>
>  Most other operating systems, including Windows, can be made to do the
>  same, which avoids this problem altogether. 
> -For example, you can change Windows NT/2000/XP to assume UTC for the
> +For example, you can change Windows NT/2000/XP/Vista to assume UTC for the
>  hardware clock by creating and setting the DWORD value
>  <blockquote><pre>
>  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation\RealTimeIsUniversal

actually, there are problems related to XP SP2 and others, so I have
removed this (but your note was a reminder I needed to do this).  It
just doesn't work well enough for Windows to be considered capable of
REALLY using UTC for the hardware clock and displaying an accurate
time.  MS considers this a legacy registry change, and is not
actively respecting it in new code, so don't expect it to work on any
edge cases even if it seems to work for you.

http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html

Last week, MS's wonderful time keeping and our local DST change folly
caused people at my employer to be totally confused about the time of
a meeting set BEFORE the DST change: for a 11:30am meeting, some people
thought it was at 11:30, 10:30 and 12:30...and these people were all in
the same time zone...

Nick.