Q: How can I download Mac OS X Mountain Lion 10.8.5 for free?. Mountain Lion was never available for download so it is still not available for download. Do not download the bootleg version from anywhere, there is no way to verify that t. The first release of the new OS — Mac OS X Server 1.0 — used a modified version of the Mac OS GUI, but all client versions starting with Mac OS X Developer Preview 3 used a new theme known as Aqua. Aqua was a substantial departure from the Mac OS 9 interface, which had evolved with little change from that of the original Macintosh operating.

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Start up from macOS Recovery

Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:

Apple silicon

Turn on your Mac and continue to press and hold the power button until you see the startup options window. Click the gear icon labeled Options, then click Continue.

Intel processor

Make sure that your Mac has a connection to the internet. Then turn on your Mac and immediately press and hold Command (⌘)-R until you see an Apple logo or other image.

If you're asked to select a user you know the password for, select the user, click Next, then enter their administrator password.

Reinstall macOS

Select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.

Follow these guidelines during installation:

• If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
• If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
• If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
• Allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

After installation is complete, your Mac might restart to a setup assistant. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.

Other macOS installation options

When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions:

• On an Intel-based Mac: If you use Shift-Option-Command-R during startup, you're offered the macOS that came with your Mac, or the closest version still available. If you use Option-Command-R during startup, in most cases you're offered the latest macOS that is compatible with your Mac. Otherwise you're offered the macOS that came with your Mac, or the closest version still available.
• If the Mac logic board was just replaced, you may be offered only the latest macOS that is compatible with your Mac. If you just erased your entire startup disk, you may be offered only the macOS that came with your Mac, or the closest version still available.

You can also use these methods to install macOS, if the macOS is compatible with your Mac:

• Use the App Store to download and install the latest macOS.
• Use the App Store or a web browser to download and install an earlier macOS.
• Use a USB flash drive or other secondary volume to create a bootable installer.

Apple on Wednesday released Mountain Lion, the operating system otherwise known as OS X 10.8. Mountain Lion adds several iOS-inspired apps and features, wholly embraces iCloud, and, of course, drops support for some older Macs.

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Read Jason Snell’s full review of Mountain Lion.

Step 2. Get A Copy Of Mac Os X DownloadNormally, It Is Assumed That Updating OS Is A One-way Road. That’s Why Going Back To A Past Apple OS Version Is Problematic. The Main Challenge Is...

Like Mac OS X Lion, Mountain Lion is available exclusively through the Mac App Store as a 4.34GB download. But it comes at a discount from its predecessor: Mountain Lion costs $20, while Lion cost $30 when it arrived a little more than a year ago. (If you purchased a new Mac on or after June 11, 2012, you can upgrade for free through Apple’s Up-to-Date program.) Your Mac will need to be running Snow Leopard or later to launch the Mountain Lion installer.

Some Macs that could run Lion can’t run Mountain Lion. You’ll need an iMac (Mid 2007 or newer), MacBook (Late 2008 Aluminum, or Early 2009 or newer), MacBook Pro (Mid/Late 2007 or newer), Xserve (Early 2009), MacBook Air (Late 2008 or newer), Mac mini (Early 2009 or newer), or Mac Pro (Early 2008 or newer) to install the new operating system.

Many of the features introduced in the new OS X update will be familiar to anyone with an iOS device.

New apps in Mountain Lion include Reminders, Notes, and Game Center, each of which looks like—and syncs seamlessly via iCloud with—its iOS counterpart. Mountain Lion also includes Messages, née iChat, which now offers support for sending iMessages to other Mac and iOS device users.

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Also making the leap from iOS to the Mac with Mountain Lion is Notification Center, a single spot that assembles alerts from Apple’s apps, along with third-party apps and websites that integrate with the technology. Mountain Lion delivers support for AirPlay mirroring to the Mac, letting Mac users send their display to an Apple TV.

The iOS-to-Mac approach in Mountain Lion mirrors the one that Lion took last year. But Ross Rubin, a principal analyst with Reticle Research, expects the transition to be a lot less jarring for users. “[Apple] has focused more on apps and information that consumers will want across platforms such as notes, reminders, messages and notifications as opposed to Lion introductions of full-screen apps and Launchpad,” Rubin told Macworld. “Whereas Launchpad may have seemed foreign to the Mac, Notifications feel as comfortable if not more comfortable on OS X than on iOS.”

Mountain Lion also introduces a number of new technologies to OS X including Gatekeeper, a security feature that gives users control over which apps can launch on their Macs; significant Mail and Safari upgrades; system-wide sharing features; and built-in dictation among other capabilities.

Mountain Lion’s arrival comes at the same time Microsoft is prepping an OS update of its own: Windows 8 is slated to be in consumers’ hands by October. “In contrast to Microsoft, which is creating an operating system with a split personality in Windows 8, Apple is keeping all Mac apps optimized for a user interface driven by a pointing device,” Rubin said. “Mountain Lion also takes further steps to tie the Mac in more closely with the cloud, a strategy that is also important to Microsoft as they pursue Google’s home field ecosystem advantage.”

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Real mountain lions are ambush predators: They sneak up on their prey unannounced for surprise attacks. Perhaps Apple took inspiration from the new OS’s namesake when the company first unveiled Mountain Lion last February, announcing the upgrade through selected press outlets but without the fanfare of a press event. Wednesday’s official release of the new operating system was less surprising; the company promised a July release during June’s Worldwide Developers Conference, and Apple executives gave the world a one day heads-up Tuesday about Mountain Lion’s release date when announcing its quarterly earnings.