![]() ![]() It's also recommended to perform Boot ROM update even if you plan to stay on older macOS version like High Sierra or older. If you plan to make a clean installation of macOS Mojave, make sure your partition is formatted as APFS filesystem and using GUID Partition Map. Support status Unsupported as of November 2020. Safe Mode can be started by holding Shift + Enter when selecting macOS Monterey in OCLP's Boot Menu. Then post updating the Boot ROM you no longer need it. macOS Sierra Succeeded by macOS Mojave Official website macOS High Sierraat the Wayback Machine (archived September 11, 2018) Tagline Your Mac. To work-around this issue, boot the MacBookPro11,3 in Safe Mode and once macOS is installed, run OCLP's Post Install Root Patches to enable GPU Acceleration for the NVIDIA dGPU. Best would be to get some cheap HP GeForce GT630 2 GB or DELL GeForce GT640 1 GB/GTX645 1 GB for PC (doesn't need to be flashed with Mac rom). If your current card doesn't support Metal (like factory installed NVIDIA GeForce GT120, AMD Radeon HD4870, HD5770 or HD5870) and your new card is too new to have High Sierra support (like RX5000/RX6000 series), then you need a helper card. Copy the ISO installation image of Mac OS X 10. If you have NVIDIA card make sure to have the latest Web Driver driver installed which can be downloaded from Drivers page, otherwise installer would complain about Metal support or FileVault enabled: My graphics card is Metal capable, but macOS Mojave installer still complains about lack of Metal support. Related tutorial: How to use Disk Utility to format drives on your Mac 3) Download a copy of macOS Sierra 10.12. 2) Format it as GUID Partition Map, Mac OS Extended (Journaled) using the Disk Utility application. If your macOS High Sierra partition is still running HFS+ filesystem it will be automatically converted to APFS after macOS Mojave installation. Instructions to install macOS Sierra on older Macs 1) Find yourself an 8GB or larger USB drive or external hard drive partition. We recommend performing Boot ROM update and macOS Mojave installation with no other PCIe cards installed and a SATA drive connected to one of the internal drive bays. fixes critical CPU security bugs like Spectre & Meltdown etc. adds support for PCI-Express 2.0 (5.0 GT/s link) for all PCI-Express 2.0 or faster cards instead of much slower PCI-Express 1.1 (2.5 GT/s link) ![]() You need to update Mac Pro 5,1 Boot ROM in order to install macOS Mojave 10.14 and newer unsupported systems like macOS Catalina 10.15, macOS Big Sur 11 or macOS Monterey 12. Installing macOS Mojave 10.14 and performing Mac Pro 5,1 Boot ROM update ![]()
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