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Showing posts with the label boot

Clock shows wrong time when dual booting Windows and Linux (*nix)

Everybody dual booting Windows and Linux (or any other *nix derivative) surely has different hours when booting back to Windows from Linux. Well, that's because Windows manages the clock in "local time" instead of UTC which is what most other OSes do (such as Linux). According to this Lifehack (http://lifehacker.com/5742148/fix-windows-clock-issues-when-dual-booting-with-os-x) there's a workaround in order to force Windows to use UTC. It's a simple registry entry that starts working as soon as you reboot your PC back into Windows. I'll copy it here for posterity in case LH ever runs into trouble and disappears. Search for: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation Right click anywhere in the right pane and hit "New > DWORD (32-bit) Value". Name it "RealTimeIsUniversal". Double click on it and give it a value of "1". That's it. Just reboot back into Windows and check that (if your cloc...

Headless home server - Boot via GPT/EFI UUID

My Headless home server (Seagate Dockstar) doesn't have a standard boot manager. It simply boots a uBoot image, either from it's NAND or from an external HDD. All this is set up in it's BIOS. Unfortunately it doesn't have a iLO/DRAC/SIMC/IPMI so that I can control the BIOS over a network connection. Anyway, this amazingly cheap/"low power" device comes with a crippled OS and I like ArchLinux ARM a lot better. Since ALARM (short for ArchLinux ARM) doesn't fit in the small NAND I have to setup the BIOS to point it to an external USB device. But there's a downside to this. Since the PlugPC has 4 USB ports and since the HDD's don't always take the same amount of time handshaking with the BIOS on boot-up, what happens is that sometimes disk A is sda and disk B is sdb but some other times disk A is sdb and disk B is sda. Rather confusing...for us and for the small server too. And worst of all, when the change happens the device won't boot u...