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Can't install Windows 10 UEFI next to MacOS High Sierra on same SSD

Joined
Oct 11, 2017
Messages
75
Motherboard
Lenovo 510s-14isk (OpenCore UEFI)
CPU
i5-6257u
Graphics
Iris 550, 1920x1080
Hi everyone,
I have tried over and over again to install Windows 10 on the same SSD (the only one I have on my laptop) but I always get the same error.
The procedure I have followed is this one.
1)I have installed MacOS with Clover UEFI after setting the BIOS:
  • LEGACY SUPPORT
  • UEFI first
  • Disable fast boot
  • Disable secure boot
2)I partitioned the drive with:
  • MacOS (already installed) -> APFS
  • Windows10 -> MacOS Extended Journaled (about 60gb)
3)I have booted into Windows 10 EFI from boot menu using both a USB 2 and 3 port.
ALTERNATIVE 1
4)I have deleted Windows10 partition and created a new one
5)I get this error when selecting the primary partition created:
"We couldn't create a new partition or locate an existing one. For more information, see the Setup log files"
ALTERNATIVE 2
4)I have deleted Windows 10 partition and hit next
5)I get this error:
"Windows could not prepare the computer to boot into the next phase of installtion. To install Windows, restart the installation"

I will attach 2 photos I have taken of the errors.
Drive 0 partition 1 is the EFI partition where CLOVER is installed which is not visible in the photo.
Drive 0 partition 2 contains MacOS.
 

Attachments

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  • ALTERNATIVE2.jpg
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Joined
Oct 11, 2017
Messages
75
Motherboard
Lenovo 510s-14isk (OpenCore UEFI)
CPU
i5-6257u
Graphics
Iris 550, 1920x1080
For help with a laptop it is best to post in the Laptop Forum.
https://www.tonymacx86.com/forums/high-sierra-laptop-support.192/
Sorry I have posted there now, could you give me help anyway? Would you suggest installing windows 10 first and then MacOS?
That would take more time because I have to apply all patches and kexts again so before doing that I would like to know if it's worth doing.
NEW POST:
https://www.tonymacx86.com/threads/...next-to-macos-high-sierra-on-same-ssd.239403/
 

Going Bald

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Joined
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Sorry I have posted there now, could you give me help anyway? Would you suggest installing windows 10 first and then MacOS?
That would take more time because I have to apply all patches and kexts again so before doing that I would like to know if it's worth doing.
NEW POST:
https://www.tonymacx86.com/threads/...next-to-macos-high-sierra-on-same-ssd.239403/
General installation guide for desktops is pinned to start of this forum. With changes to config.plist specific to laptops you should be able to install following the guide.
 
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