making a disk image for mac fusion emulator

Apparently the web client to manage VSphere/ESXi does not support version 10 virtual machines and you need to use the Windows only client. It is currently recommended to use ESXi 5.5 and virtual machines of version 8 or 9. If you use ESXi then the Mac will boot in to the ESXi hypervisor and run OS X as a guest. It is also possible and legal to run OS X as a guest in VMware ESXi but again only if you are using a real Mac. In this scenario if you used VMware Fusion or Parallels or VirtualBox they would all allow running an OS X guest in a virtual machine on a Mac running OS X as the host. Jim Drew of Microcode Solutions has warned against booting FUSION from vMac system images because using any non-generic system software on those images (vMac emulates a Mac Plus) will cause problems for the emulator. It is hypothetically possible to get round this problem but does require more expertise and additional tools. The harddisk images used by FUSION are compatible with the Executor/vMac format. VirtualBox has no built-in support for OS X guests even on a real Mac host and as a result even if you did make an iso image of OS X which is possible, by itself it will not work. In the Name field, enter the name for the disk image. This will bring up a window that can be used to associate the CD-ROM drive in the virtual machine with the ISO file on disk or with the real CD-ROM drive. Click on the disc icon in the bottom right corner of the FreeBSD Parallels window.

Enter a filename for the disk image, add tags if necessary, then choose where to save it. Copy the appropriate ISO image to the local Mac filesystem or insert a CD/DVD in the Mac's CD-ROM drive. However it is also the case that VMware Fusion and Parallels have built-in support for OS X guests to make it much easier to install and setup an OS X guest it is therefore not necessary to make a special OS X iso image. In the Disk Utility app on your Mac, choose File > New Image > Blank Image.

While VMware Fusion and Parallels implement checks and will only allow an OS X guest if the host is a real Mac I don't believe VirtualBox does this. The same would apply to VMware Fusion and Parallels. Therefore yes it would be legal to run OS X in VirtualBox if VirtualBox is running on a Mac. It is only legal to run OS X in a virtual machine if the host computer is a Mac.

Making a disk image for mac fusion emulator