[ntp:questions] questions] Automatic time synchronization of local hw clock.
Casper H.S. Dik
Casper.Dik at OrSPaMcle.COM
Sun Apr 20 10:16:08 UTC 2014
David Taylor <david-taylor at blueyonder.co.uk.invalid> writes:
>It would be helpful if the operating systems were to agree on how to use
>the BIOS clock. Not every computer travels during the year, and not
>every location has summer-time transitions.
Right; dual boot (or more) is a problem and with multiple
"boot environments" for the same OS, running the BIOS
clock at localtime always gives issues during the DST
transition. Each of the boot environments keeps a record
whether it has adjusted the clock for DST and so multiple
changes can be made.
>Most users would likely be very confused were they to see the BIOS clock
>time in UTC!
When would you see that? When you get into the BIOS?
>(Actually, the only time UTC has caused me a problem has been on Linux
>systems, not on Windows...)
Not my experience. UTC is the only proper setting; it is the only
way to have multiple boot environments. Windows XP has issues with that.
Then there is the problem with the times stored in file systems
under Windows; while Unix type systems always store UTC, that doesn't
happen under Windows with FAT; fortunately, this seems to have
been fixed with NTFS. (It now has 64 bit time stamps based with
100 nano-seconds granularity since 01-01-1601, 00:00 (UTC)
Casper
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