The major problem for users who can install the patch, however, is it will cause declines in performance for the affected machines by as much as 30%. This could present a particular problem for owners of older hardware that doesn't support macOS High Sierra. If left unpatched, the bug allows normal user programs, such as database applications and JavaScript in web browsers, to distinguish some of the layout or contents of protected kernel memory areas of the chips. The vulnerability allegedly affects all systems running Intel x86 chips and is present across all popular operating systems, including Windows, Linux, and macOS, but is currently under embargo, meaning the full details of the bug are yet to be officially announced. Samuels, without whom I could not have updated this guide for High Sierra.Nevertheless, the chip design flaw shouldn't be taken lightly. One more thing: a huge shout-out to Chad S. But it’s macOS, in a virtual machine, and that’s not bad! Be sure to check out our guide to VirtualBox’s advanced features to get the most out of your machine, too. This isn’t going to be perfect, which is to be expected from an entirely unsupported setup.

Also, remember that audio won’t work, nor will things like FaceTime or iMessage, which require a real Mac. RELATED: 10 VirtualBox Tricks and Advanced Features You Should Know Aboutįrom now on, you can open VirtualBox for any Mac-related testing you want to do. Again, you’ll see a lot of errors pop up during boot, but they’re fine ignore them. Start up VirtualBox, load up your virtual machine, and it should boot to your preferred resolution! If the command did not work, make sure your virtual machine is named “High Sierra” exactly if it isn’t, edit the commands above putting your machine’s name in the quotes. That’s it! If everything worked, you shouldn’t see any feedback the commands will simply run. Cd 'C:Program FilesOracleVirtualBox' VBoxManage.exe modifyvm 'High Sierra' -cpuidset 00000001 000306a9 04100800 7fbae3ff bfebfbff VBoxManage setextradata 'High Sierra' 'VBoxInternal/Devices/efi/0/Config/DmiSystemProduct' 'MacBookPro11,3' VBoxManage setextradata 'High Sierra' 'VBoxInternal/Devices/efi/0/Config/DmiSystemVersion' '1.0' VBoxManage setextradata 'High Sierra' 'VBoxInternal/Devices/efi/0/Config/DmiBoardProduct' 'Mac-2BD1B31983FE1663' VBoxManage setextradata 'High Sierra' 'VBoxInternal/Devices/smc/0/Config/DeviceKey' 'ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc' VBoxManage setextradata 'High Sierra' 'VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC' 1

Latest version of high sierra