Embedded Device Security = Device Hidden.Set your BIOS as follows: (F10 to Enter BIOS) Format USB as FAT32, copy the folder contents to root of USB and flash using BIOS menu. V3.96 December 2019 - see attached file in repo. Overwrite or delete the existing EFI folder that’s already there prior to pasting the contents of 'HP Z620 EFI.zip' Copy the contents to the root of your boot drive's EFI mounted partition, the same location to where you just installed the Clover bootloader.
When the above process has completed, download the Clover bootloader package and install it to your Catalina Installation USB device NOT THE MACINTOSH YOU'RE CURRENTLY WORKING ON!! using the following options 'Clover for UEFI booting only’ & 'Install Clover in ESP’, leave any default options checked.Įxtract the 'HP Z620 EFI.zip' folder downloaded from GitHub. Wait until the process completes, it will take several minutes. You will prompted for a ‘y’ confirmation prior to copying the installer files to your USB drive.
You will be prompted for your password to the Macintosh, enter this then hit 'Enter'. Sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/Install \macOS \Catalina -nointeraction Open Terminal and type the following command: It will download to your Applications folder as 'Install macOS Catalina.app' Give it the name ‘Install macOS Catalina’, then hit eraseĭownload Catalina on your Mac from the Apple AppStore.Locate your installer USB drive you just plugged in to the Macintosh and format it as: In the top right-hand corner, click the 'Find' icon, and then type 'Disk Utility' then click on the 'Disk Utility.app' application to open it. Take your USB drive and plug it in to your working Macintosh. HP Z620 EFI.zip - EFI directory files from this GitHub repo above A definitive list can be found here Īccess to an Apple Macintosh to download macOS Catalina from Apple via the AppStore Metal: Supported, feature set macOS GPUFamily2 v1Ī HP Z620 Workstation with a graphics card that is natvely supported by macOS Catalina.HP Z620 Catalina Install GuideĪMD 5700 XT family is supported natively in 10.15.x there is no need to add additional kernel extentions, although you may need to add 'agdpmod=pikera' to your boot flag if using WhateverGreen.kext NOTE: ONLY use v5120 of CLover Boot Loader as the newer ones seem to crash on boot. UPDATES: Check the repo for EFI directory updates for the latest version. HP-Z620-macOS-Catalina Complete EFI for HP Z620 for macOS Catalina 10.15.7 using Clover 5120.