Utc clock windows 10 always on top7/26/2023 ![]() ![]() The preferred method to solve the issue is to set Windows to store the time in UTC instead of forcing the other OS to store the time in local time. UTC Windows Licensed under CC BY-NC-SA 4. If you are dual-booting Windows 10 or 11 and Linux or another operating system that uses UTC to store the system time, you notice that the time is wrong when switching the operating systems. Windows constantly screwed up the time, when set time automatically was enabled.If unsure, try another reboot to check if the settings persists, but that should do the job. Then reboot Windows and set the time zone to UTC and disable ``set time automatically`* in the Date and Time settings: The real-time clock can use either UTC or local time. Windows Registry Editor Version 5.00Īlternatively you can create a QWORD (or DWORD for 32-bit Windows if you are adventurous!) with the value 1 in HKEY\_LOCAL\_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation\RealTimeIsUniversal The system time is always kept in Coordinated Universal Time (UTC) and converted in applications. ![]() Registry magic! Create a new registry key named RealTimeIsUniversal.reg with the following contents. And thus it changes the system clock (which should have shown 15:00) to use the UTC time (09:30). in the BIOS/UEFI the time will be offset), but I guess most of the users who have a problem with that are anyways not often doing those thing :-) Setting Windows to use UTC as system time But Windows thinks the hardware clock has stored the local time. Youll probably see this: assume that the BIOS clock is set to UTC time (recommended) UTCyes If you do, change UTCyes to UTCno. Type gksu gedit /etc/default/rcS and press Enter. The best way to detect the boot mode of Windows is to do the following1. The downside is that users need to account for that, when doing low-level system management (e.g. To do this, edit /etc/default/rcS as root and make sure it has UTCno: Press Alt F2. Windows 8/8.1 and 10 x86 32-bit support booting in IA32 UEFI mode from GPT. When setting the system clock to UTC, this problem will never happen. This means you can install as many operating systems in parallel without interference of them with the system time - just imagine if you have for example, Windows, FreeBSD and two Linux distributions on your computer and every one of them wants to account for daylight saving time …. The operating system then translates this to the local time. In my opinion Linux has the better approach: The BIOS/UEFI system time is there set to a global harmonised standard, UTC. Windows by default expects the computer time to be set to local time, while Linux assumes it to be UTC. If you are running Windows and Linux in dual boot, you will soon find out, that the clocks are not matching. ![]()
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