dual boot w/Opencore 0.5.7

[moheban79]

This is happening to me, too, but only when using an iMacPro1,1 config. When I use my old iMac19,1 config, I can use OpenCore to boot into Windows just fine.

I'm going to go through my plists line by line, to see what the big differences are.

I actually just solved my Windows multiboot issues with both the standard OC 5.8 release and the NDK fork which supposedly masks all acpi modifications from Windows. The trick was to blessoverride the windows boot manager path. Also think that the alphabet case was important. The path may be case sensitive. Use Clover to get the proper path by pressing spacebar on Windows in the menu and take that exact path and plug it into the BlessOverride section of your config.plist. Someone on the other forum came up with that idea. Anyhow all works now. Only issue is that one of my usb ports or devices fails to be recognized in Windows if booting from Opencore sometimes and sometimes the boot order flips in bios and skips the opencore menu and goes straight into Windows.

Thanks.

 

[ayushere]

If you dont want to use n-d-k fork, the vanilla OpenCore works just fine with this.

 

[moheban79]

I know except vanilla OC will affect ACPI tables and causeissues with Windows possibly.

 

[ayushere]

I know except vanilla OC will affect ACPI tables and causeissues with Windows possibly.

didn’t caused any issues in me though. i game on windows mainly.

 

[johnnyx86]

If you dont want to use n-d-k fork, the vanilla OpenCore works just fine with this.

Your website says three separate SSDs. But how to dualboot in a single SSD? I was able to dualboot & tripleboot in clover but when i transitioned to OC i was never able to dualboot.

 

[ayushere]

you can use Bootcamp to do this. searching in ****** people have success with Bootcamp on single SSD.
OpenCore is in a very early stage right now.

 

[AppleNewtonFan]

I actually just solved my Windows multiboot issues with both the standard OC 5.8 release and the NDK fork which supposedly masks all acpi modifications from Windows. The trick was to blessoverride the windows boot manager path. Also think that the alphabet case was important. The path may be case sensitive. Use Clover to get the proper path by pressing spacebar on Windows in the menu and take that exact path and plug it into the BlessOverride section of your config.plist. Someone on the other forum came up with that idea. Anyhow all works now. Only issue is that one of my usb ports or devices fails to be recognized in Windows if booting from Opencore sometimes and sometimes the boot order flips in bios and skips the opencore menu and goes straight into Windows.

Thanks.

Hi,

I have the same problem (can't boot Win 10 and I have a blue screen. I have macOS Mojave and Windows 10 on separate disks (MacOS on M.2, Windows 10 on SATA SSD). OC see Windows, but can't boot (blue screen).

I'm not an advanced user. Would you like to make some small tutorial on how to do all changes?

Cheers,
Pawel

 

[familygw]

Hi all,
Having dual boot with OC is pretty easy. First at all I suggest to use the latest version from OC (0.5.8) and ensure to use the correct SSDT files and also to include the correct sentences in order to spoof devices or configuration only for Darwin (if not, you might see unknown devices on Windows).

About SSDT files: in general, using the files included along the OC releases is fine (they have the lines which identifies the OS in the boot process). Other SSDT (like SSDT-UIAC generated by Hackintool for USB Map might be ignored and use the kext instead).

A nice setting to enable is the AdviseWindows (PlatformInfo > Generic > AdviseWindows = TRUE).

With OC 0.5.8 the ApfsDriverLoader.efi is no longer necessary if we enable the feature in UEFI > APFS > EnableJumpstart.

About Bootcamp: it's just a software who allows us to install another OS in a very easy way. It helps us to build a bootable USB and help us to make a new partition in our macOS disk (or just select another disk) and it depends of the SMBIOS info to know which software (drivers for hardware from Apple and the menu for the tray which allow us to select the 'startup disk') for Windows should download. So, basically we can reach the same thing in a long way using another softwares and downloading the drivers manually.

Check this guide for OC 0.5.8: Installing BootCamp

And check how nice is working the dual boot:

Cheers!

 

[johnnyx86]

Hi all,
Having dual boot with OC is pretty easy. First at all I suggest to use the latest version from OC (0.5.8) and ensure to use the correct SSDT files and also to include the correct sentences in order to spoof devices or configuration only for Darwin (if not, you might see unknown devices on Windows).

About SSDT files: in general, using the files included along the OC releases is fine (they have the lines which identifies the OS in the boot process). Other SSDT (like SSDT-UIAC generated by Hackintool for USB Map might be ignored and use the kext instead).

A nice setting to enable is the AdviseWindows (PlatformInfo > Generic > AdviseWindows = TRUE).

With OC 0.5.8 the ApfsDriverLoader.efi is no longer necessary if we enable the feature in UEFI > APFS > EnableJumpstart.

About Bootcamp: it's just a software who allows us to install another OS in a very easy way. It helps us to build a bootable USB and help us to make a new partition in our macOS disk (or just select another disk) and it depends of the SMBIOS info to know which software (drivers for hardware from Apple and the menu for the tray which allow us to select the 'startup disk') for Windows should download. So, basically we can reach the same thing in a long way using another softwares and downloading the drivers manually.

Check this guide for OC 0.5.8: Installing BootCamp

And check how nice is working the dual boot:

Cheers!

Actually AdviseWindows did not work.
As matter of fact setting Misc -> BlessOverride -> \EFI\Microsoft\Boot\bootmgfw.efi also did not work. There was no Windows option in OC 0.5.8.

Even the below:
Misc -> Security -> ScanPolicy = 0
Misc -> Boot -> Hideself = Enabled

did not work.

It seems weird in my install. If you know what could be wrong let me know.

 

[johnnyx86]

Hi all,
Having dual boot with OC is pretty easy. First at all I suggest to use the latest version from OC (0.5.8) and ensure to use the correct SSDT files and also to include the correct sentences in order to spoof devices or configuration only for Darwin (if not, you might see unknown devices on Windows).

About SSDT files: in general, using the files included along the OC releases is fine (they have the lines which identifies the OS in the boot process). Other SSDT (like SSDT-UIAC generated by Hackintool for USB Map might be ignored and use the kext instead).

A nice setting to enable is the AdviseWindows (PlatformInfo > Generic > AdviseWindows = TRUE).

With OC 0.5.8 the ApfsDriverLoader.efi is no longer necessary if we enable the feature in UEFI > APFS > EnableJumpstart.

About Bootcamp: it's just a software who allows us to install another OS in a very easy way. It helps us to build a bootable USB and help us to make a new partition in our macOS disk (or just select another disk) and it depends of the SMBIOS info to know which software (drivers for hardware from Apple and the menu for the tray which allow us to select the 'startup disk') for Windows should download. So, basically we can reach the same thing in a long way using another softwares and downloading the drivers manually.

Check this guide for OC 0.5.8: Installing BootCamp

And check how nice is working the dual boot:

Cheers!

Actually AdviseWindows did not work. As matter of fact setting Misc -> BlessOverride -> \EFI\Microsoft\Boot\bootmgfw.efi also did not work. There was no Windows option in OC 0.5.8.

Even the below:
Misc -> Security -> ScanPolicy = 0
Misc -> Boot -> Hideself = Enabled

did not work.

It seems weird in my install. If you know what could be wrong let me know.