Setting the time to use UTC on dual boot OSs?

Posted on 2006-04-04
Last Modified: 2010-04-22

How could I prevent time setting problems for dual boot OSs? I am dual booting Windows 2000/Solaris 10...

In order for the time settings (esp. during a DST time change) to be correctly configured for BOTH operating systems, I need to set all of then to UTC time. Because UTC is constant and does not move...So to prevent time settings from conflicting from one OS to another....What steps should I take for both Solaris and Windows to tell time in UTC?

Question by:slajoh01
    LVL 43

    Accepted Solution

    Well, I know this problem only from linux side.
    Unfortunatelly it's impossible for windows to set the bios time to UTC (or I'm too weak in Win).
    Therefore only what I could do for linux, was to tell it, that bios keeps local time...
    LVL 51

    Assisted Solution

    as ravenpl said, M$ does not know what UTC is and always sets the BIOS clock to the local time
    Unix/Linux (Solaris) is clever, it even can deal with stupid other systems;-)
    simply assume that the BIOS clock is UTC, then set your TZ=GMT in /etc/TIMEZONE, this way you at least have a proper clock, even it tells you being GMT+0 instead of your local timezone.
    Sorry, I'm also not certain if M$ learned meanwhile how to use UTC.
    LVL 61

    Assisted Solution

    Missed the main party - sometimes you do not need UTC or hardware clock - look at, or look for qemu as free and slower alternative.
    LVL 61

    Expert Comment

    No comment has been added to this question in more than 21 days, so it is now classified as abandoned.
    I will leave the following recommendation for this question in the Cleanup topic area:

    Split between ravenpl http:#16373987 , ahoffmann http:#16376069 and gheist http:#16395363

    Any objections should be posted here in the next 4 days. After that time, the question will be closed.

    EE Cleanup Volunteer
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