On Mon, 2008-06-23 at 10:38 +0100, Phil Thompson wrote: > Windows likes to fiddle with the system BIOS clock and set it to the > correct local time for example when changing to summertime / daylight > saving time.
Indeed, Windows saves the time in the hardware clock using local time. This is problematic if you reboot a Windows machine between 1 and 2am on the day where you enter or leave DST (feel free to try it). Unfortunately I do not know whether a registry key exists to change this behaviour. It would be worth investigating. > Linux (big generalisation here) seems to assume the system clock is set > to the time zone and makes the DST correction in the displayed time > within the OS. Indeed, linux will store the time in the hardware clock using UTC by default, but this can be changed. In Gentoo Linux, one would adjust /etc/conf.d/clock In Ubuntu and other Debian-based linuxes, you would adjust /etc/default/rcS (change UTC from yes to no). > The result is you get double summer time in Ubuntu if dual booting on a > machine with Windows. This behaviour will now cease, although you'll get one last clock swing as you reboot. Regards, Tony V.
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