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89 lines
3.8 KiB
Markdown
89 lines
3.8 KiB
Markdown
# Installing UEFI Windows 10
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* Guide based off of [cdf's Mac Pro Thread](https://forums.macrumors.com/threads/opencore-on-the-mac-pro.2207814/)
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To install UEFI is actually super simple! All it requires is to boot Windows' Installer through OpenCore to force a UEFI setup. Here we'll be going a bit more step by step in the process including partitioning and such.
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* Note: UEFI Windows is generally quite usable for Arrendale and newer models, however machines with Penryn CPUs may experience issues
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* Recommended Models:
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* MacBookAir4,x and newer
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* MacBookPro8,x and newer
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* Macmini5,x and newer
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* iMac11,x and newer
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* MacPro4,1 and newer
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* Xserve3,1 and newer
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Once you know your model is supported, you're good to go with the rest of this guide
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## Disk Formatting
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To start off, we'll need the following:
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* An 8GB USB drive for the Windows Installer
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* Minimum of 30GB of free space on whatever drive you want to install Windows too
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First, lets format out drives as follows:
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### USB Drive Formatting
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Open Disk Utility in macOS and format the USB Drive as ExFat with MBR Scheme:
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### Disk Formatting
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Next, grab the drive you wish to install Windows on and partition it as ExFat (If formatting entire drive, ensure it's GUID Partition Table):
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If you plan to use the same hard drive for macOS and Windows, we recommend creating a dedicated partition just for OpenCore. This lets Windows have the ESP to itself and OpenCore can stay within it's own bubble.
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Recommended size is 200MB and the partition format **must** be FAT32 for OpenCore to operate correctly. You will next want to install OpenCore onto the new partition, either moving from the ESP with [MountEFI](https://github.com/corpnewt/MountEFI) or rerunning the OpenCore-Patcher.app
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* Note: For machines with dedicated drives for Windows, having different partitions for OpenCore is not required
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* Note 2: We recommend uninstalling OpenCore from the ESP/EFI Partition when you create this new OpenCore partition to avoid confusion when selecting OpenCore builds in the Mac's boot picker
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## Creating the Installer
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First up, lets grab Windows's Installer at the below link:
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* [Download Windows 10 Disc Image (ISO File)](https://www.microsoft.com/en-ca/software-download/windows10ISO)
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Next, mount the Windows 10 ISO:
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The open terminal and run `rsync` on the USB drive (replace CCCOMA_X64 with the mounted ISO's name, as well as replacing W10USB with your USB drive's name):
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```
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rsync -r -P /Volumes/CCCOMA_X64/ /Volumes/W10USB
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```
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Command will take some time, so sit back and get some coffee. Once finished, the root of the USB drive should look as follows:
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* Ensure that these folders and files are on the root, otherwise the USB will not boot
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Once done, lets reboot into OpenCore's Menu and you'll see a new Windows' entry:
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* Note: Do not boot the installer outside of OpenCore as this will default back to the old MBR BIOS setup. Booting through OpenCore ensures Windows uses UEFI
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From there, install Windows as normal and you'll get a new BootCamp entry in OpenCore's picker when done!
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* Don't forget to run BootCamp's utilities installer as well to ensure Wifi and such are functioning correctly. This can be downloaded from the BootCamp Assistant app in macOS
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## Troubleshooting
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### iMac12,x Bluescreen after driver installation
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Currently Intel's iGPU drivers for the HD 3000 series do not support UEFI booting in Windows. Recommended solution is to simply disable: [iMac 12,1 Windows 10 Boot Loop – Fix Intel Graphics issue](https://zzq.org/?p=39)
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