The action described both here and at the link I’ve provided doesn’t really say what `oscdimg’ is doing to make the iso different from the one obtained from Microsoft. The documentation on `oscdimg’ is severely lacking. What I do wish is that the article would explain how this works. These machines are exceptionally inexpensive considering that in 2007, the MP 2,1 was one of the best production desk tops available. With a 64bit OS they can use up to 32GiB of RAM. However, they are perfectly capable of running a 64bit OS and in fact came stock with one. These computers have a 64bit processor but a 32 bit EFI, so they don’t recognize install disks for 64bit Win7 or above as bootable. The user then only needs to have the ISO image of the operating system they wish to use (by downloading it from the appropriate site) and then enter the path of. The purpose of this is to make a 64bit install disk bootable on a Mac Pro 1,1 or 2,1. For more context, see however, the instructions there are incorrect, the instructions here are correct. On June 6, 2011, at the Apple Worldwide Developers Conference, it was reported that the official discharge for Lion would be in July 2011. Download Windows 10 Disc Image (ISO File) Before updating, please refer to the Windows release information status for known issues to confirm your device is not impacted. Tutorials: How to Clean Install Mac OS using a USB drive on Mac. This article doesn’t really explain why you would do this. Download: Mac OS X Mountain Lion 10.8 DMG & ISO Image.