Leopard Recognizes Windows Executable Format, Virtualization in the Works? - MacRumors
Skip to Content

Leopard Recognizes Windows Executable Format, Virtualization in the Works?

An interesting observation was noted on the Wine mailing list. As it turns out, new in Leopard is the ability to load and understand Windows Portable Executable (PE) files which is the common format for Windows applications and libaries. Understandably, the author raises a number of questions about the discovery:

So this leads to the question. Whats going on? Is this a hold over from EFI which is PE by default? Why would the OS need to load the EFI files? Maybe just for easy of development and testing? Or is something else going on? Is Apple going to be adding a win32 compatibility layer to OS X? Is having a loader of any use to us?

This, of course, leads some to the most dramatic conclusion: that Apple may be integrating Windows virtualization into Mac OS X itself. Of course, rumors of this possibility had been circulating for the months prior to Leopard's official release.

One developer we had contacted about this finding thought it was very unlikely and felt that this parsing of PE files may simply be the product of Apple's ongoing work with Safari and iTunes for Windows. He also noted that simply parsing PE files is a far step from being able to actually run Windows applications.

Popular Stories

Apple Logo Spotlight Blue

Apple Unveiled These Five New Apps Last Week

Saturday June 20, 2026 8:00 am PDT by
Apple last week unveiled five new apps, with four announced at WWDC 2026 alongside its upcoming fall software updates, one released in beta for developers, and one released independently by its subsidiary Claris. Siri AI App One of the biggest announcements of WWDC 2026 was Siri AI, a ground-up rebuild of Apple's voice assistant that for the first time comes with a dedicated standalone...
Apple Event Logo

Apple to Release These 20 New Products Across Rest of 2026 and 2027

Sunday June 21, 2026 7:42 am PDT by
Apple's annual WWDC developers conference is in the rearview mirror, but there is still a lot to look forward to over the next year and beyond. In his Power On newsletter today, Bloomberg's Mark Gurman listed around 20 products that he expects Apple to release across the remainder of 2026 and 2027. Now that the more intelligent and personal version of Siri has finally arrived in beta, a...
Aston Martin CarPlay Ultra Screen

Apple Says CarPlay Ultra is Coming to These Vehicle Brands

Thursday May 21, 2026 11:53 am PDT by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly a year later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. CarPlay Ultra...