You can Google for it and download it, for example on BitTorrents. Original iATKOS L2 is distributed in DMG format used for Mac OS X installation packages.
However, we used easier way with a pre-prepared installation image called iATKOS L2, that includes Mac OS X Lion and other utilities, patches as well as hardware drivers that allows users to install Mac OS X. Advanced users can use original DVD with special boot loaders and test optimal settings for the best Mac OS X performance.
They are few ways how to install Mac OS X to virtual machine. It has very straightforward installation without any complex settings. You can download free VirtualBox installation package from Oracle website. Next time you’ll need it, just open VirtualBox, select the virtual machine you’ve created and click Start.How to install Mac OS X Lion to VirtualBox Step 1 - Install VirtualBox to your computer This is it! You now have a Windows 10 virtual machine running on your Mac. Decide if you want to have a digital assistant (Cortana) and adjust privacy settings.Enter your Microsoft credentials or, if you don’t have a Microsoft account and don’t wish to create one right now, select Offline account in the bottom-left corner and then Limited experience in the bottom-left corner.Select if you install Windows for personal use or for an organization and click Next.If asked to, select which network to connect to or click I don’t have Internet in the bottom-left corner.Select a second keyboard layout if you want.Confirm your preferred keyboard layout and click Yes.Wait while the virtual machine restarts (don’t press any keys).Wait until the installation is complete.
Enter Windows license key to activate Windows and click Next.Choose your preferred language, time and currency formats and keyboard or input method.When prompted to open System Preferences you may click Deny.Click Add, select Windows ISO file you’ve downloaded back in the beginning and click Start.If prompted to select a virtual optical disk file, click on a folder icon.Select Create a virtual hard disk now.Select how much RAM will be allocated to the Windows virtual machine (stay in the green zone).Create a name for your new virtual machine and select which version of Windows you want to install (select a 64-bit version unless your Macbook is more than 10 years old, in which case you’ll need to find out if your processor is 32-bit or 64-bit).Go to Applications and launch VirtualBox.Wait until the installation is complete and close the window.Close the installation window (click Keep when prompted to move the installer to Trash).