virtualbox.org

This is not a Hackintosh as defined by running a Windows host.

However, can someone confirm my belief that because I am running a Mac Pro Mid-2010 with High Sierra which is the last OS I can install on this machine, this machine is essentially a Hackintosh?

Also, is that the reason Guest Additions fails to install, too?

IMO, if it needs to be hacked to run on the current hardware, then it's a hackintosh.

See the sticky topic at the top of this forum for info on the (unsupported, provided as-is) MacOS GAs.

The problems are most probably down to the fact that 'Big Sur' was specifically programmed by Apple not to install/run on the Mac Hardware of the era you are using. The one piece of real hardware Virtual Machines always see is the Host CPU, so the Big Sur VM will detect the CPU, recognise that it is "too old" to run that OS version and ...

Thank you for the quick replies.

It's just interesting that Big Sur will run on a VM on an obsolete Mac Pro but won't install on that Mac Pro because of the video card/metal BS. Even more interesting is that the App Store is accessible on the Big Sur VM.

Fortunately, with a network share to the obsolete host the iCloud on the VM is not relevant. I'd rather have Guest Additions install

So, if VirtualBox is a hack then it's a hack.

I find that I have no need for the (somewhat limited) GA's in a macOS VM.

I enable file and screensharing in the System Preferences -> Sharing pane in the guest.

I then use Screen Sharing in the host to attach to the VM and have most of the facilities that are offered by the GA's - i.e. drag and drop file sharing, copy/paste text etc etc.

I minimise the VM window to avoid screen clutter.

I have "successfully" built a Big Sur VM on my iMac. My iMac is current and will run Big Sur, but I'm not going to take the plunge yet. On the VM, I get the iCLOUD_UNSUPPORTED_DEVICE error when I try to add my Apple ID to the System Preferences. Has anyone found a fix for this yet?

It could be that you need to set the system serial number in your VM - the default serial number is 0.

There is a discussion on this in the thread: viewtopic.php?f=22&t=95287&hilit=DmiSystemSerial

I executed (BS2 is the name of my VM) and relaunched the VM, but I still get the unsupported error when I try to add my AppleID to the VM.

@mikepl

A bit of googling and I discovered there further attributes (systemuuid amongst them) that need to be specified in the VM settings. Unfortunately the sites found step into the realms of hackintoshes so I'm reluctant to post any URLs. However, if you search "virtualbox icloud" you should be able to find the answers. I have not tried to apply any of these attributes myself due to lack of time.