When people say the best time setting for UNIX is UTC...do they mean
the BIOS RTC Clock or the actual displayed OS time??


j.slayton wrote:
> I am running on a dual-boot system running Window2000/Solaris 10....The
> last Daylight Savings Time change that we had this month just made my
> clocks change erratically...I would like to ask, if whats the best Time
> settings for both operating systems (windows and solaris) in order to
> prevent drastic erratic time changes during DST changes??
>
> Here are my current clock or time settings:
>
> 1. RTC or the Hardware Clock is set to UTC..(The BIOS is set to UTC)
>
> 2. Solaris DISPLAYED Time or TZ is set to TZ=UTC....and ZONE INFO is
> set to UTC also...
>
> 3. Windows, is set to show local time zone....but, were it says under
> the Time Zone properties, I have the "Adjust clock to DST
> Automatically" UNCHECKED at the moment.
>
> Now, #1 and in #2 I do want to leave were its at, in other words, I
> want Solaris to keep its time in TZ=UTC and also the "Zone Info as UTC
> also. Thats fine.
>
> Now, in order to prevent problems or erratic time changes during the
> DST changes, what should I do under Windows?? In other words, should I
> leave the settings above were its at...Or, I do need to change some
> things around to prevent possible issues during DST changes in a
> dual-boot Windows/UNIX system?
>
> Thanks in advance for the help!

In article <1145153652.377569.85250@i39g2000cwa.googlegroups.c om>,
j.slayton wrote:
>When people say the best time setting for UNIX is UTC...do they mean
>the BIOS RTC Clock or the actual displayed OS time??

They mean that the BIOS / hardware clock should be UTC; the OS can be
set to display the time in whatever time zone the user / system administrator
wants.

If multibooting with an OS that can only handle a BIOS / hardware clock
in local time, it is best to just set that OS' time zone to be UTC.
Some OSes can be set to assume either UTC or local time for the BIOS /
hardware clock, to maximize compatibility in multiboot computers.

--
------------------------------------------------------------------------
Timothy J. Lee
Unsolicited bulk or commercial email is not welcome.
No warranty of any kind is provided with this message.

So are you saying those settings above are correct the way I have it in
order to avoid issues during DST?

Or, better yet, why dont you just post an example on what to do for
both Hardware and the actual displayed time for both OSs....To avoid
issues during the DST...I would appreciate this...

My current settings that I posted above, should I leave it the way its
at? Or, should I do some changes to avoid DST problems? Please post an
example of what should I do for both Windows and Solaris please.

j.slayton wrote:
> I am running on a dual-boot system running Window2000/Solaris 10....The
> last Daylight Savings Time change that we had this month just made my
> clocks change erratically...I would like to ask, if whats the best Time
> settings for both operating systems (windows and solaris) in order to
> prevent drastic erratic time changes during DST changes??
>
> Here are my current clock or time settings:
>
> 1. RTC or the Hardware Clock is set to UTC..(The BIOS is set to UTC)
>
> 2. Solaris DISPLAYED Time or TZ is set to TZ=UTC....and ZONE INFO is
> set to UTC also...
>
> 3. Windows, is set to show local time zone....but, were it says under
> the Time Zone properties, I have the "Adjust clock to DST
> Automatically" UNCHECKED at the moment.
>
> Now, #1 and in #2 I do want to leave were its at, in other words, I
> want Solaris to keep its time in TZ=UTC and also the "Zone Info as UTC
> also. Thats fine.
>
> Now, in order to prevent problems or erratic time changes during the
> DST changes, what should I do under Windows?? In other words, should I
> leave the settings above were its at...Or, I do need to change some
> things around to prevent possible issues during DST changes in a
> dual-boot Windows/UNIX system?
>
> Thanks in advance for the help!