Professor Posted December 30, 2021 Share Posted December 30, 2021 (edited) Hi, I am using latest OpenCore. I can pick Windows in OpenCore picker and boot, but booting Windows 10 only results in a black screen. After approximately 8 Minutes the booting of Windows continues and eventually I reach the login screen. It was working before, so some things have changed maybe in OpenCore. Can someone please give me a hint of what to change in config.plist to allow choosing Windows in OpenCore picker and booting it in normal speed? The Windows installation is not corrupt, I can boot successfully into Windows directly without using OpenCore. Thanks, Professor© Edited January 1, 2022 by Professor Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/ Share on other sites More sharing options...
miliuco Posted December 30, 2021 Share Posted December 30, 2021 @Professor I guess OC version you are using is 0.7.6. Really there isn't any change related to boot Windows from the picker between 0.7.5 and 0.7.6. The only thing can be "Fixed handling PCI device paths with logical units in ScanPolicy". What value do you have in ScanPolicy? Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774380 Share on other sites More sharing options...
Professor Posted December 31, 2021 Author Share Posted December 31, 2021 Hi, thanks for answering. The Value is 0 Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774389 Share on other sites More sharing options...
miliuco Posted December 31, 2021 Share Posted December 31, 2021 @Professor It’s ok to detect and show windows entry. Do ResetNVRAM once. Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774391 Share on other sites More sharing options...
Professor Posted December 31, 2021 Author Share Posted December 31, 2021 @miliuco Thanks, but ResetNVRAM did not help. I still can't boot into Windows from OpenCore, it starts and then after a few seconds stops into black screen. Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774392 Share on other sites More sharing options...
Guest 5T33Z0 Posted December 31, 2021 Share Posted December 31, 2021 (edited) Check the injected ACPI Tables. Each one of them should contain an "If (_OSI ("Darwin"))" expression, so that the applied changes only apply to macOS. That's especially important when using OpenCore since it injects ACPI tables into every OS otherwise (unlike Clover). Edited December 31, 2021 by 5T33Z0 Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774394 Share on other sites More sharing options...
miliuco Posted December 31, 2021 Share Posted December 31, 2021 @Professor Do you have this in config.plist? Kernel > Quirks > CustomSMBIOSGuid > True (default is False) PlatformInfo > UpdateSMBIOSMode > Custom (default is Create). If not, try it. Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774401 Share on other sites More sharing options...
Professor Posted December 31, 2021 Author Share Posted December 31, 2021 @miliuco Sorry, setting the checkbox to the values you mentioned did not change anything. Problem persists. 3 hours ago, 5T33Z0 said: Check the injected ACPI Tables. Each one of them should contain an "If (_OSI ("Darwin"))" expression, so that the applied changes only apply to macOS. That's especially important when using OpenCore since it injects ACPI tables into every OS otherwise (unlike Clover). Sorry, I checked the ACPI section of my config.plist and there are only two entries with no if _OS("Darwin") expression. Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774402 Share on other sites More sharing options...
Guest 5T33Z0 Posted December 31, 2021 Share Posted December 31, 2021 Post the EFI folder. I need to look into the ACPI Tables. Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774403 Share on other sites More sharing options...
Professor Posted December 31, 2021 Author Share Posted December 31, 2021 (edited) 4 hours ago, 5T33Z0 said: Check the injected ACPI Tables. Each one of them should contain an "If (_OSI ("Darwin"))" expression, so that the applied changes only apply to macOS. That's especially important when using OpenCore since it injects ACPI tables into every OS otherwise (unlike Clover). Sorry, I checked the ACPI section of my config.plist and there are only two entries with no if _OS("Darwin") expression. 18 minutes ago, 5T33Z0 said: Post the EFI folder. I need to look into the ACPI Tables. Hello @5T33Z0, here is my EFI Folder EFI.zip Edited December 31, 2021 by Professor Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774405 Share on other sites More sharing options...
Guest 5T33Z0 Posted December 31, 2021 Share Posted December 31, 2021 That folder and config is a mess… too many errors to list them all, but some are: missing quirks, missing acpi tables, wrong order of kexts, wrong kexts, too many drivers, conflicting settings etc. I assume you are using a Haswell CPU? Try this: EFI.zip Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774410 Share on other sites More sharing options...
Professor Posted December 31, 2021 Author Share Posted December 31, 2021 Sorry @ 5T33Z0, also your EFI Folder does not work with Windows 10, still black screen. Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774411 Share on other sites More sharing options...
Professor Posted December 31, 2021 Author Share Posted December 31, 2021 I have to clarify: booting OpenCore with Windows results in a black screen. But after approximately 8 Minutes the booting continues and Windows starts up. So there is only a very long delay in starting windows from Opencore. I modified the first post accoringly. Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774415 Share on other sites More sharing options...
Guest 5T33Z0 Posted December 31, 2021 Share Posted December 31, 2021 Still your OC Folder and config were a mess. Try disabliing the entry in Misc > Entries (put a # in front of the PCI path) Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774416 Share on other sites More sharing options...
Professor Posted December 31, 2021 Author Share Posted December 31, 2021 (edited) Thanks @5T33Z0 for your EFI-Folder. I tried it and it didn't solve the problem but caused other problems: I had no sound in macOS. I reverted to my version again. I also tried your last hint, and putting a # in front of the PCI path did not helo either. Best regards and a happy new year. Professor© Edit: Problem solved. There is a BIOS setting about Intel Graphics enabled/disabled. I disabled it and now it works as expected. Edited January 1, 2022 by Professor Link to comment https://www.insanelymac.com/forum/topic/350194-very-long-delay-in-starting-windows-by-opencore-solved/#findComment-2774423 Share on other sites More sharing options...
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