#Virtual optical disk file mac os install#

Otherwise, it will keep on trying to install the CPU patch.Д¦) Restart the machine. Select 'Create Virtual Disk Now' Choose VDI for format. Like a physical disk, a virtual disk has a size, or capacity, which must. When a guest OS reads from or writes to a hard disk, Oracle VM VirtualBox redirects the request to the image file.

#Virtual optical disk file mac os mac os x#

Choose your version (if you have Mojave or Catalina, choose Mac OS X (64 bit). Disk Image Files (VDI, VMDK, VHD, HDD) Disk image files reside on the host system and are seen by the guest systems as hard disks of a certain geometry. Install the CPU patch.ДҐ) Power off the machine, and remove the ISO file from the D: drive. Click 'new' Type the name for virtual machine and Mac OS X for type. Then, under the attributes section, click on the CD icon, click on 'Choose Virtual Optical Disk File.' and browse to the ISO file you just downloaded.Д¤) Boot the VM: You'll see red text on black. My CD drive appeared as 'Host Drive 'D:''. We will need to apply a CPU fix for this.Дownload the zip file at and unpack it to get an ISO file.ДЈa) Disable Acceleration: In the Virtual Machine settings in Virtual Box, go to 'System', 'Acceleration', and disable any checkboxes.ДЈb) Set the VM to boot the ISO: In the Virtual Machine settings in Virtual Box, go to 'Storage' and click on the CD drive (or, if you don't have the option, add an optical drive under the IDE controllers). The error message I received was: 'When initializing device IOS: Windows protection error. For the disk, use an existing drive and browse to the VDI file.Дў) Download a CPU fix: My virtual machine did not start up because the CPU was too fast. Navigate to and select the macOS 11.0 Big Sur '.iso' file. Use the following steps to load the macOS Big Sur iso file you downloaded into the empty optical drive: Click Empty below 'Storage devices.' Click the CD icon next to 'Optical Drive' in the top-left. In Virtual Box, create a new Windows 95 machine. Load the macOS Big Sur iso file into the empty optical drive. From the Attributes menu, click the blue CD disk next to the Optical Drive drop down menu and click Choose Virtual Optical Disk File Figure 5: Choose Virtual Optical Disk Drive В¶ Where there appears Please choose a virtual optical disk file, select the ISO file and click Open. 'Please select a virtual optical disk file or a physical optical drive containing a disk to start your machine from.' I have only ever had to choose an os as the last step in setting up a VirtualBox VM in my experience. Here's what I did:ДЎ) Download the VDI file here and also VirtualBox. Fortunately, the instructions I followed were simpler. Some of the previous instructions did not work for me.