![]() Called High Sierra, the new operating system is more about refinements than new features, as it aims to make your Mac more reliable, capable, and responsive while laying the foundation for future innovations in the worlds of VR (virtual reality) and AR (augmented reality). Connect the USB stick to the system Install Transmac utility and launch it in administrator mode Right-click on USB disk and choose Format Disk for Mac and press Yes when prompted Right-click again and choose Restore with Disk Image.Click three dots and browse the High Sierra dmg file you downloaded from the link given under ‘Things You Need. Rosetta is neither included nor supported in Mac OS X v. Snow Leopard, but can be retained as an option via the installer or Apple Software Update for users who need to run Power. To make life easier, we came up with a more reliable workaround to directly download macOS from Apple server instead of via the Mac App Store, for previous macOS and OS X releases. Tiger, the version that was released with the first Intel- based Macintosh models.3Rosetta is not installed by default in Mac OS X v. Download and Install macOS High Sierra without MAS. If you click Not Now, you will be asked again the next time you open an app that needs Rosetta. Click Install, then enter your user name and password to allow installation to proceed. If Rosetta is not installed, youre automatically asked to install it. I have no idea how much is going to need to be done, but I can hopefully get an idea. If the app opens, Rosetta is already installed and working. I'm going to look into modifying macOS more, to make this work. ![]() Update 2: I've discovered this discussion about getting Rosetta to run on OS X Lion, which unfortunately seemed to stop in 2011, without having provided (as far as I could understand) a conclusion to whether Rosetta can be run on OS X Lion. It sounds like PixInsight 1.9.0 is going to be a landmark release for a lot of reasons, particularly the JavaScript engine overhaul, and that it will be very much worth the wait.It isn’t a secret that Apple is killing support for Rosetta in OS X Lion 10.7 the first version of OS X that won’t support the PowerPC platform and apps designed to run on it. While I'm not thrilled with the idea of holding back on macOS upgrades for an extra year or two, I'll do what I must to keep using this application. PixInsight is an essential application for me, and PI support / compatibility is my #1 need for whatever other software my Mac runs. Also, OS X Mountain Lion takes up about 10 GB of space on its initial installation, so the computer where you install Mac OS X must have at least 10 GB of space in its hard drive. The big caveat, of course, is that "legacy support" on older macOS versions is not as quick or as comprehensive as with newer releases, particularly for security patches: ( Ars Technica: "Only the latest OSes are fully patched.") rosetta mac os x lion download install However, thats only the bare minimum if you plan to install Mac OS X for day-to-day use, I recommend allocating at least 50 GB of space. If Rosetta 2 goes away in 2025, we'll have until 2027 to keep using supported Macs. So if 2024's macOS 15.0 no longer includes Rosetta 2, we'll actually have until 2026 to keep using macOS Sonoma 14.0. Whenever it happens, existing macOS installs (with Rosetta 2) will continue to be supported with updates for ~2 more years after new versions are released. ![]() At the latest, I'd expect macOS 16.0 to drop Rosetta 2 in 2025. The latest developer release of Mac OS X 10.7 Lion excludes support for Rosetta (used to run PowerPC code on Intel Macs), Front Row, and Oracles Java runtime, although Apple includes a mechanism to automatically download an updated Java runtime for Lion. I expect Apple will drop support for Intel Macs by next year's macOS version (15.0), and it wouldn't surprise me if Rosetta 2 went along with it. Existing Rosetta 2 installs should be unaffected. When Rosetta 2 translation is discontinued, it should be in the form of a new OS release. It was not included or offered in Mac OS X 10.7 'Lion' and newer. Click to expand.I keep a close eye on Apple as it relates to the rest of the tech industry. Rosetta was not included in Mac OS X 10.6 'Snow Leopard' but could be manually downloaded and installed. ![]()
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