On Sunday 31 October 2010 17:03:32 Graham Murray wrote: > Mick <michaelkintz...@gmail.com> writes: > > MSWindows changed it to winter time when I eventually booted into it. > > Gentoo wouldn't show the winter time until I had first booted into > > MSWindows. If the setting CLOCK="local" is meant to make Gentoo use the > > hardware clock like MSWindows does, why it did not behave the same as > > MSWindows with the DST change? > > Gentoo uses the "CLOCK=" value when it boots. It uses this to determine > the initial system time. If you set to 'UTC' then the appropriate > timezone offset will be applied. If it is set to 'LOCAL' then Gentoo > assumes (and it has to) that the HWClock is set to the correct local > time, including the correct Daylight Saving correction. > > So, if Gentoo was running at the time of the clock change then the > system time would have changed from Summer to Winter time. However, if > Gentoo was not running and you booted it this morning then it would, > legitimately, assume that HW Clock had been set to the correct local > time prior to it be booted. When you booted into MSWindows, it changed > the time on the HW Clock to be Winter time (ie it put it back 1 hour), > so that next time you booted into Gentoo the HW clock was set to the > correct local time. With CLOCK="LOCAL", when you boot for the first time > after a Summer/Winter time change, Gentoo has no way to telling whether > or not something else (eg MSWindows or manually via the BIOS setup) has > already changed the HW clock to Summer/Winter time.
Thank you Graham for your very detailed reply! I understand now why the problem exists. I have used the registry change suggested by Nuno on Win7 and will see what gives next time DST changes. I just hope that it'll work without having *both* OS shifting the clock by one hour ... The more I read this page[1] the more I am tempted to format MSWindows out of this box whether the warranty is still valid or not! [1] http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html -- Regards, Mick
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