Here's how to run macOS Big Sur on VirtualBox: Install Catalina on VirtualBox. Download Big Sur InstallAssistant.pkg (9GB) either inside the virtual machine or on the host on a disk image that will be mounted on the virtual machine. Windows can create and mount VHD disk images through Disk Management. Use VirtualBox to create an additional disk image that's has at least 60GB of space. From VirtualBox Settings select the Verison Mac OS X 64 bit. Mukhtar Jafari Post author January 1, 2018 at 11:30 PM Reply. From VirtualBox, Settings select the Verison Mac OS X 64 bit. Steffen December 30, 2017 at 8:40 AM Reply. I got everything to work without issues the. Discussions related to using VirtualBox on Mac OS X hosts. 20 posts. Page 1 of 2. 1, 2. USB drives not attached to guest VM. By pete.miles » 13. Oct 2011, 18:35. I am having difficulty connecting an USB external hard drive to my guest VM. My host machine is a MAC desktop and the OS is. If you're one of the many people running VirtualBox on a 64-bit machine, but only being offered the ability to build 32-bit virtual machines.

I am having difficulty connecting an USB external hard drive to my guest VM.
My host machine is a MAC desktop and the OS is Snow Leopard 10.6.8.
I am running VirtualBox 4.1.4 to create a Virtual Machine running Windows 7.
This all seems to be running well with no problems and my USB drive is visible and accessible in the host OS but not in the guest Windows.
I have followed the instructions in the online User Manual, and have tried at least half a dozen times to attach the USB drive to the Windows 7 machine but without success. At no time do I get any error messages of any sort.
Could someone please help with this problem?I installed a MacOS on a Windows 10 host by following the article 'install-macos-10-14-mojave-virtualbox-windows' at techsviewer. com.
I noticed a huge lag when starting the machine for the first time. The mouse was very slow and I got multiple keystrokes, hitting one key (e.g. 'a') would result in multiple characters (e.g. 'aaaa'). I found a post indicating that VirtualBox should be started using 'RunAs Administrator'. That seemed to help but after a while the lag returned.
I then moved the MacOS guest to another host. There I could give it more resources: 4GB > 8GB RAM, 2 CPU > 4 CPU. The MacOS seemed to run more stable, without lag. I then tried to run a higher screen resolution and used the following command to upgrade to 1280x1024
vboxmanage setextradata 'VMNAME' 'VBoxInternal2/EfiGraphicsResolution' '1280x1024'

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To my surprise the lag returned! I had to revert back to the default 1024x768 for the lag to go away. Does anyone know what is causing the lag? And how to solve it, not really a fan of 1024