Opencore last step problem, please HELP.

[opabato]

Firstly thank you to anyone that chimes in to give me a helping hand.

 

I have used TechNolli's opencore guide on YouTube GIGABYTE Z390 DESIGNARE i9-9900K Dual Boot HACKINTOSH BUILD | Complete Guide! Latest Updates!

to generate my macOS Catalina boot loader for the below set-up.

 

Motherboard: ASRock Z390 Phantom Gaming-ITX/ac

CPU: Intel® Core™ i9-9900K Processor

SSD: Intel® SSD 660p Series (2.0TB, M.2 80mm PCIe* 3.0 x4, 3D2, QLC)

SSD: Intel® SSD 660p Series (2.0TB, M.2 80mm PCIe* 3.0 x4, 3D2, QLC)

Graphics Card: AMD Radeon™ RX 5700 XT Graphics

 

At this stage I have successfully installed macOS Catalina 10.15.5, though I have one last step to complete, that's to transfer the EFI folder from there USB drive, onto the installed macOS SSD.

 

Going off his guide, he seems to mount the USB EFI folder first, followed by the installed OS drive.

 

My hidden EFI folders don't seem to mount on my desktop, and they are complete empty.

 

Please let me know if I need to give any further information to try resolve this last step.

 

 

 

 

 

 

Edited June 28, 2020 by opabato

[MacNB]

On 6/28/2020 at 2:42 AM, opabato said:

Firstly thank you to anyone that chimes in to give me a helping hand.

 

I have used TechNolli's opencore guide on YouTube GIGABYTE Z390 DESIGNARE i9-9900K Dual Boot HACKINTOSH BUILD | Complete Guide! Latest Updates!

to generate my macOS Catalina boot loader for the below set-up.

 

Motherboard: ASRock Z390 Phantom Gaming-ITX/ac

CPU: Intel® Core™ i9-9900K Processor

SSD: Intel® SSD 660p Series (2.0TB, M.2 80mm PCIe* 3.0 x4, 3D2, QLC)

SSD: Intel® SSD 660p Series (2.0TB, M.2 80mm PCIe* 3.0 x4, 3D2, QLC)

Graphics Card: AMD Radeon™ RX 5700 XT Graphics

 

At this stage I have successfully installed macOS Catalina 10.15.5, though I have one last step to complete, that's to transfer the EFI folder from there USB drive, onto the installed macOS SSD.

 

Going off his guide, he seems to mount the USB EFI folder first, followed by the installed OS drive.

 

My hidden EFI folders don't seem to mount on my desktop, and they are complete empty.

 

Please let me know if I need to give any further information to try resolve this last step.

 

 

 

 

 

 

 

What do mean by "hidden EFI folder" ?

EFI folders are not hidden. They just not mounted by default.

 

Some EFI Mount utilities do not always Mount EFI multiple EFI folders correctly and macOS can get confused (e.g. each EFI partition is mounted with the name "EFI" instead of unique names).

Best to mount one at a time. Best to use macOS's terminal command diskutil mount diskXs1 where you replace X with the disk number.

You can get the disk number by first running diskutil list.

To unmount the EFI partition, use diskutil unmount diskXs1 where X is the disk number.

 

If you have never installed anything on your macOS SSD EFI partition, then the EFI partition will be empty.

 

Tip:

Mount your USB EFI and copy contents to a temp folder on your macOS drive and then unmount the USB EFI partition (important).

Mount your macOS SSD EFI Partition and copy the content of the temp folder to the macOS EFI partition 

In your BIOS se the MacOS SSD as your main boot drive and restart your system