Therefore Windows should only be installed in Legacy BIOS mode from an optical drive. Also, you wouldn’t be able to boot into Windows after selecting its drive as bootable in macOS Preferences → Startup disk. It has been discovered that Windows when installed in EFI mode is corrupting the Mac Pro’s firmware by signing it with multiple Secure Boot (X.509) certificates. Warning: DO NOT install Windows from a USB flash drive. Step 2: Create a bootable Windows 10 DVD disk If you successfully did it please let us know in the comments below or via e-mail. Many people reported it was not possible in their case. We didn’t test using PCIe → SATA III adapter or PCIe → NVMe adapter for Windows partition. >1GB where sequential read/write speeds matter) on your system drive. Of cause, SATA II (up to 300MB/s) is a bottleneck for modern 2.5” SSDs (up to 550 MB/s where SATA III is preferable)īut real life experience shows that the difference is hardly noticable unless you deal Using the HP 654540-001 3.5” → 2.5” adapter (7$) to place 2.5” SSD in a drive bay can be quite convenient. We recommend using the internal SATA II connector in one of four drive bays or alternatively one of two SATA II connectors in the optical drive area. Windows has to be installed on a separate drive, which is good actually to avoid messing with partitions in future. If not, please update first.īoot Camp Assistant no longer supports cMP and doesn’t allow creating a separate partition for Windows. It’s supposed that you have the latest Boot ROM version 144.0.0.0.0. This guide is for those who want macOS Mojave + Windows 10 + modern GPU (in our case Sapphire Radeon Pulse RX 580 8GB). What is more, none of them supports displaying of boot menu with 4k 60hz monitor connected. Well, some EFI bootable cards that support boot menu exist but they are released almostġ0 years ago and are really outdated. Supported, but it’s completely possible though not quite easy.Īnother challenge is that macOS Mojave 10.14 now implies using Metal-capable GPU while most of them are not able toĭisplay Apple boot menu (which you normally see holding the Option key) required to boot into Windows. Installing Windows is no longer officially It’s prettyĭisappointing considering how capable and upgradable these machines still are. Classic Mac Pro 5,1 (or simply cMP, also 4,1 upgraded to 5,1) is now considered by Apple as vintage.

How to install windows on imac 2009