CMOS (non-volatile harware) clock sycronisation




I have a number of Windows member servers in an AD forrest and in steady
state w32time keeps there clocks approximately right (+-200ms). However when
they are rebooted their clocks are (for a short time) all over the place (for
10-30 minutes) because, it would appear, that nothng is keeping the CMOS
(non-volatile harware) clock in sycronisation with the Windows clock.

On Linux I'd just create a cron job to do "clock -uw" periodically but I
can't find any equivalent on Windows.

Please note: I'm asking how to get Windows to keep the *CMOS* clock synced
so that when servers are rebooted their clocks start out *approximately*
right *before* w32time manages to syncronise to a time server.
.



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