On the USB flash drive, open the $WinPEDriver$ and remove the IntelMEI folder. To install Windows, make sure that the drivers are valid, and restart the installation” message.
The 2018 MacBook Air (and potentially Macs after that) cannot load the IntelMEI driver and give a “Windows Setup could not install one or more boot-critical drivers. AutoUnattend.xml provides the location of the $WinPEDriver$ folder to load the drivers during boot. If there is not an AutoUnattend.xml at the top level of the drive (as shown below), download AutoUnattend.xml, unzip it, and add it to the drive. Drag the contents of the Windows Support Software to the USB flash drive. Drag all the files and folders from the mounted ISO to the USB flash drive. To mount the ISO, double-click on the ISO in Finder. Mount the Windows ISO downloaded from Microsoft. To create the USB Flash drive, follow these steps: It does not matter what edition of Windows is used, since Windows is not going to be installed. Select the version of Windows that is closest to the version of Windows installed on the Mac (Windows 8, Windows 10). Windows will not be installed, but the install media will give access to the command line tools in Windows. 
Windows Install Mediaĭownload the current install media from the Microsoft website. Do not save directly to the USB Flash Drive. Save the Windows Support Software to your desktop or other location. Open Boot Camp Assistant in the Utilities folder and download the current Windows Support Software from the “Action” dropdown in the menu bar. Quit Disk Utility after this operation completes. In Disk Utility, format the Flash drive as exFAT.Insert an 8GB or larger flash drive into a USB port on the Mac.
The USB Flash drive must be formatted as exFAT.
It is important to use this Mac since it will be used to identify the correct Windows drivers.
Windows 10 Installer ISO for Windows 10Īll the preparation is done in macOS on the Mac that is having an issue booting Windows. USB Flash drive (8 GB or larger recommended). It is relatively straightforward to create a bootable USB Flash drive to boot to the Windows 10 installer and open up a DOS prompt for troubleshooting. To troubleshoot an issue with Windows 10 (especially boot-related issues), it can be handy to boot into Windows 10 not installed on a Boot Camp partition. 
Posted on Septemby Timothy Perfitt - Uncategorized Updates Create a Windows 10 Bootable USB Flash Drive on a Mac
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