Not too clear on just what you have done, but if you reformatted the disk at some point, you may have erased the Recovery HD on the disk itself. So that would leave you having to try Internet Recovery (Option-Command-R) to install the original OS.
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- About Mac OS Mavericks 10.9. Apple OS X Mavericks was first announced in June 2013 and was then released in October of 2013. It was the tenth big release of the Apple OS X line. At the same time, Mavericks was promoted and marketed as a major release just as was the case with the Lion and Mountain Lion OS X updates which came before the Mavericks.
- Coincidentally, the Mac OS X Mountain Lion download was the last paid upgrade to an OS X release. Future updates starting from the OS X Mavericks were all free. Apple also offered another marginal update on the Mac OS X Mountain Lion download called the Mountain Lion version 10.8.1. This update was released on August 23, 2012.
Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support. The latest version of OS X features an elegant design, includes enhancements to the apps you use most, and enables your Mac and iOS devices to work together in new ways. Learn more about OS X; Safari extensions are a great way for you to add new features to Safari. Built by developers, Safari extensions use the latest web technologies.
The problem may well be that Lion is not the original OS. This Mac originally shipped with Snow Leopard install discs, which you do not have. It did not originally ship with Lion, so there may be some issue there which is keeping you from completing the installation of Lion using Internet Recovery since Internet Recovery is intended to install the OS the Mac originally shipped with.
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Are you wanting to sell or give away this Mac? If so, it needs to have the OS it originally shipped with installed, which would be 10.6.6 or 10.6.7 Snow Leopard. If you have access to an Apple Store, they could probably do this for you from their store feed. Snow Leopard can be updated to where the Mac App Store is available, and the new owner can install anything they want under their own Apple ID. This Mac can be upgraded to run Sierra.
I don't know if replacement install discs are still available from Apple for this Mac, but if you can get it done for free at the Apple Store that would be a better option for you.
Good luck!
Mar 19, 2017 7:21 PM
With an all-new design that looks great on macOS Big Sur, Xcode 12 has customizable font sizes for the navigator, streamlined code completion, and new document tabs. Xcode 12 builds Universal apps by default to support Mac with Apple Silicon, often without changing a single line of code.
Designed for macOS Big Sur.
Xcode 12 looks great on macOS Big Sur, with a navigator sidebar that goes to the top of the window and clear new toolbar buttons. The navigator defaults to a larger font that’s easier to read, while giving you multiple size choices. New document tabs make it easy to create a working set of files within your workspace.
Document tabs.
The new tab model lets you open a new tab with a double-click, or track the selected file as you click around the navigator. You can re-arrange the document tabs to create a working set of files for your current task, and configure how content is shown within each tab. The navigator tracks the open files within your tabs using strong selection.
Navigator font sizes.
The navigator now tracks the system setting for “Sidebar icon size” used in Finder and Mail. You can also choose a unique font size just for Xcode within Preferences, including the traditional dense information presentation, and up to large fonts and icon targets.
Code completion streamlined.
A new completion UI presents only the information you need, taking up less screen space as you type. And completions are presented much faster, so you can keep coding at maximum speed.
Redesigned organizer.
An all-new design groups all critical information about each of your apps together in one place. Choose any app from any of your teams, then quickly navigate to inspect crash logs, energy reports, and performance metrics, such as battery consumption and launch time of your apps when used by customers.
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SwiftUI
SwiftUI offers new features, improved performance, and the power to do even more, all while maintaining a stable API that makes it easy to bring your existing SwiftUI code forward into Xcode 12. A brand new life cycle management API for apps built with SwiftUI lets you write your entire app in SwiftUI and share even more code across all Apple platforms. And a new widget platform built on SwiftUI lets you build widgets that work great on iPad, iPhone, and Mac. Your SwiftUI views can now be shared with other developers, and appear as first-class controls in the Xcode library. And your existing SwiftUI code continues to work, while providing faster performance, better diagnostics, and access to new controls.
Universal app ready.
Xcode 12 is built as a Universal app that runs 100% natively on Intel-based CPUs and Apple Silicon for great performance and a snappy interface.* It also includes a unified macOS SDK that includes all the frameworks, compilers, debuggers, and other tools you need to build apps that run natively on Apple Silicon and the Intel x86_64 CPU.
Updated automatically
When you open your project in Xcode 12, your app is automatically updated to produce release builds and archives as Universal apps. When you build your app, Xcode produces one binary “slice” for Apple Silicon and one for the Intel x86_64 CPU, then wraps them together as a single app bundle to share or submit to the Mac App Store. You can test this at any time by selecting “Any Mac” as the target in the toolbar.
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Test multiple architectures.
On the new Mac with Apple Silicon, you can run and debug apps running on either the native architecture or on Intel virtualization by selecting “My Mac (Rosetta)” in the toolbar.
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Multiplatform template
New multiplatform app templates set up new projects to easily share code among iOS, iPadOS, and macOS using SwiftUI and the new lifecycle APIs. The project structure encourages sharing code across all platforms, while creating special custom experiences for each platform where it makes sense for your app. Acrok hd video converter for mac 7 0 156 gb.
Improved auto-indentation
What is pdr file. Swift code is auto-formatted as you type to make common Swift code patterns look much better, including special support for the “guard” command.
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StoreKit testing
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New tools in Xcode let you create StoreKit files that describe the various subscription and in-app purchase products your app can offer, and create test scenarios to make sure everything works great for your customers — all locally testable on your Mac.
Get started.
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Download Xcode 12 and use these resources to build apps for all Apple platforms. How to run fortnite on macbook air.