Z390 Designare Mac OS Big Sur Beta

macOS Big Sur!

https://preview.redd.it/txgdtmc1jr751.png?width=3840&format=png&auto=webp&s=e6b2088828ab3392ebd9c089cc7f469e3339cb53

https://preview.redd.it/d1io3762jr751.png?width=3840&format=png&auto=webp&s=aaa1b888341653ce90379e6c760ba5659bf7bf1a

Finally managed to install macOS Big Sur on my Designare for fun. And, yes, this requires cloning from already installed working macOS Big Sur partition.

Everything seems to be in order. Did not need disablegfxfirmware and igfxfw=2 works just fine.

For a second, I thought adjusting a volume on HDMI audio and Multiple output device is finally made possible on macOS Big Sur. Well, it turns out it has no effect whether you increase or decrease the bar level.

​

Specs

CPU: i7-9700K

BIOS: F8

GPU: AMD RX-580

Bootloader: OpenCore 0.6

​

Tools used.

-Install macOS Beta(Big Sur)

-VM Fusion

​

Brief Guide.

1.Create installmedia using the script from here. It will make macOS11BigSurBeta.dmg file in downlods folder (Assuming install macOS Beta is in Application folder)

1. Use VM Fusion to install Big Sur on a virtual harddisk from an image file we just created.

2. Create an image of installed Big Sur partition.

After the installation, boot back into installer UI, insert your external hard drive, open disk utility, show all devices, and create an image of container that includes installed Big Sur partition to a external hard drive which will later be used for cloning.

https://preview.redd.it/4cx842ho9r751.png?width=1940&format=png&auto=webp&s=21d9b24f860959e685a261a977b4eddf0ab63f44

1. Restore your macOS Big Sur image to a Hard Disk (Credit goes to developers in AppleLife.ru)

After the image is created, name it whatever you like and double click it to mount the image. However this will not mount every partitions in the container, so you need to do this in terminal app.

A. Assuming the image is named "Big Sur" and is located in "MacStorage" drive, run this script to mount the image.

 hdid -nomount "/Volumes/MacStorage/Big Sur.dmg" 

https://preview.redd.it/oj67uhcwhr751.png?width=3486&format=png&auto=webp&s=7a452f59e1d5322cead70c3aab79e5d3d2cc6956

B. Find a disk number of your Big Sur image and destination

diskutil list 

Note: do not look for synthesized disk number it should be physical markup

C. Restore mounted Big Sur image to your hard drive.

dd if=/dev/diskX of=/dev/diskY bs=32m 

Note: Replace X and Y accordingly. (X = Source disk number Y=Destination)

Example

My "Big Sur " image disk number is 12 and "destination" disk number is 6

so it would be "dd if=/dev/disk12 of=/dev/disk6 bs=32m"

It will take a while for it to clone the image then you are done.

1. Configure your OpenCore 0.6 and boot into Big Sur.

This is pretty much it.