VBoxManage modifyvm something -cpuidset 1 000206a7 02100800 1fbae3bf bfebfbffģ) Right click on Install Mac OS X Lion.app, select “Show Package Contents” and navigate to Contents/SharedSupport. To create a working VM of Lion in virtualġ) Create a VM in virtualbox named something, type Mac OS X, version Mac OS X 10.7 Lion (64 bit).Ģ) Before booting the VM, switch to Terminal and change the cpuid of the guest by running Searching around I found the ID 1 000206a7 02100800 1fbae3bf bfebfbff to try in a comment on another guide which did work. I first tried the ID 00000001 000306a9 00020800 80000201 178bfbff listed in the post by BitTorrent engineering but it did not work on a Mid-2012 MacBookAir5,1 with VirtualBox 4.3.22 r98236. The solution to this is to tell virtualbox to mask the cpuid of the guest, unfortunately depending on the version of hardware? or virtualbox that you’re using you may have to experiment with which ID works. In my case it is, but unfortunately the cpuid virtualbox presents to the operating system is not one that the OS recognise & so it fails. It’s possible to use this disk image with virtualbox as-is without change however the system will not boot from the image because it fails a test by the boot loader to ensure the image is being booted on a genuine Mac. With the release of 10.7, Apple changed the way OS was packaged, the digital distribution came with a disk image named InstallESD.dmg nested inside an application named Install Mac OS X Lion.app. I’ve managed to install 10.7 to 10.10 successfully on virtualbox so far.

Virtualbox supports OS X guests but when following the usual steps in the wizard to create a new VM & pointing it to your unmodified OS image, nothing much happens.ĭepending on the version of OS X you’re trying to boot you’ll either end up with a XNU hang/panic or just dropped straight to an EFI prompt.Īgain, depending on the version of OS X being attempted the issue differs. Searching around reveals using modified images intended for building Hackintosh as the solution most people use. At present I’m confined to testing on Tiger and Mavericks though I also have machines running Leopard and Lion but they need setting up.īy default, it’s not possible to boot an instance of Mac OS X from a genuine install image, on a Mac host, running OS X using virtualbox. For testing changes related to OS X in pkgsrc I revisited trying to get virtual machines of the various releases of OS X running to improve test coverage.

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