OC4VM 2.0.0

[DrDonk]

Changes

All dates are UK DD/MM/YY format.

16/12/25 2.0.0

All spoofing of hardware should use iMac 2019 to ensure maximum compatibilty with macOS upgrades
and avoid models with T1 or T2 security chips. The iMac 2019 supports Catalina to Sequoia, and can also
run Tahoe in a VM.

• Now uses an ISO file to boot using a hidden virtual USB CD drive
• AMD core patching no longer required use regular VMware CPU settings
• Support for Tahoe setting in VMX - only supported with new Fusion and Workstation 25H2
• Added guest tool shrinkdisk to shrink virtual disks from guest
• Added guest tool sysinfo to see if spoofing values are correctly set in guest
• Modified regen code to use iMac 2019 (iMac19,2) to remove any possible issues with T2 chip
• Updated OC to 1.0.6

18/09/25 1.2.0

Tahoe support is now available but be aware it runs slowly and there are no Liquid Glass effects as
there is no guest GPU available to render them

• Support for macOS 26 Tahoe
• Updated OC to 1.0.5
• Updated KEXTs to match OC 1.0.5
• Updates in VMX file to spoofing section
• Documents and notes now delivered as HTML

10/07/25 1.1.1

• Updated the VMX spoof settings thanks to tamta0 (see docs/spoof.md)
• New version of regen tool which is used for VMX spoofing
• Removed unused KEXTs
• Removed some unused VMX settings
• Set VM default resolution to 1440x900
• Disable VM secure boot for macOS VMs
• Added macguest command for Linux

01/07/25 1.1.0

This is a breaking release and should only be used to create new VMs

• Re-branded as OpenCore 4 VMware
• Removed QEMU support as it is problematic and not stable
• Added macguest.exe to change guest OS settings in Windows VMware Workstation
• Upgraded OpenCore to 1.0.4
• Upgraded VirtualSMC to 1.3.6
• Upgraded AppleALC to 1.9.4
• Moved Apple model spoofing to the VMware VMX file
• Apple spoofing disabled by default
• Hiding VM is now done via kernel patches
• ESXi compatible VMDK now created in disks folder

06/05/25 1.0.3

• macserial utility was missing from the tools folder on the images

22/04/25 1.0.2

• Default AMD core patch set to 2 cores
• New amdcpu tool allows AMD core patch to be modified in the guest
• Default memory for VMs is now set to 8GB
• New verbose OC4VM to allow macOS boot process to be viewed
• Modified debug OC4VM variant with in-depth OpenCore and macOS kernel traces

30/03/25 1.0.1

• Fixed opencore.vmdk and recovery vmdk not being updateable in VMware
• Ported siputil from Python 3 to Go
• New tool to regenerate the spoofed Mac serial, uuid, ROM and MLB.

27/03/25 1.0.0

• Initial release

What's Changed

• Possible Mac mini model correction by @tinyapps in Possible Mac mini model correction #50

New Contributors

• @tinyapps made their first contribution in Possible Mac mini model correction #50

Full Changelog: 1.2.0...2.0.0

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This discussion was created from the release OC4VM 2.0.0.

[CubikingChill]

Any instructions to upgrade from 1.x to 2.0?
This would greatly save my time doing trial and error.

[DrDonk]

https://github.com/DrDonk/OC4VM/blob/main/readme.md section 3.3.3.

There is no simple automated way to do this as some may have made extensive changes to the original VM layout or modified opencore.vmdk. If you have specific questions please ask them here. Or if you want the VMX checking attach it to a post.

Moving forward with 2.x releases, it should be a case of replacing opencore.iso and simple VMX update script if needed.

[romasalah]

Just had a fresh Sequoia install using V2. I usually used amdcpu tool to set number of cores and vmhide to enable apple login. how to do that with V2?

[DrDonk]

Just changes them in the VMware UI. Make sure minimum 2cpus.