To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac.
OS X Mountain Lion (10.8) MacRumors attracts a broad audience of both consumers and professionals interested in the latest technologies and products. We also boast an active community focused on purchasing decisions and technical aspects of the iPhone, iPod, iPad, and Mac platforms. OS X Mountain Lion is available now as a download from the Mac App Store. Just click the Mac App Store icon in your dock, purchase Mountain Lion, and follow the onscreen instructions to install it. Mountain Lion will not only make your Mac work better, it also makes your Mac work even better with your iPhone, iPad, and iPod touch. Because it comes with iCloud, your mail, calendars, contacts.
Learn how to upgrade to macOS Big Sur, the latest version of macOS.
Check compatibility
If a macOS installer can't be used on your Mac, the installer will let you know. For example, it might say that it's too old to be opened on this version of macOS, or that your Mac doesn't have enough free storage space for the installation.
To confirm compatibility before downloading, check the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan, or Yosemite. You can also find compatibility information on the product-ID page for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini, or Mac Pro.
Make a backup
Before installing, it's a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Download macOS
It takes time to download and install macOS, so make sure that you're plugged into AC power and have a reliable internet connection.
Apple Os Mountain Lion Download
Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.
- macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
- OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard
- OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion, or Snow Leopard
Install macOS
Follow the onscreen instructions in the installer. It might be easiest to begin installation in the evening so that it can complete overnight, if needed.
If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs macOS and related firmware updates.
Learn more
You might also be able to use macOS Recovery to reinstall the macOS you're using now, upgrade to the latest compatible macOS, or install the macOS that came with your Mac.
OS X 10.8.5 Mountain Lion signifies a different landing on Apple's chip towards regular OS X updates: Mountain Lion is truly unique in boasting some exceptional features to the world of the desktop operating system. In terms of newly added features, Apple's ninth major hit would certainly carry the day over previous releases.
Apple Os Mountain Lion
The Mountain Lion goes an extra mile and introduces more thorough integration with iCloud and iOS. Further, it had given a Midas touch to Safari 6, offered Seamless AirPlay Mirroring on HDTVs, and positively the bettered notification centre and messages certainly are the big enhancements to the desktop workspace. The newly proclaimed malware blocking system 'Gatekeeper' had also made the appearance through this release.
Mac OS X Mountain Lion 10.8.5 Download
Program Details | |
---|---|
Setup Name: | Mountain_Lion_10.8_Installer.dmg |
Size on Disk: | 4.05 GB (434,865,438,72 bytes). |
Official: | Apple Inc./apple.com/macos. |
Editor's Ratings: | |
Compatibility: | MacBook (Pro, Mini), Xserve & iMac . |
The big cat macOS brings along some new abilities and refinement to your favourite browser, now the way tabs were appearing has changed a bit, and security-wise the Safari seems on the level. Other notable improvements to Safari include smart search, top hits display, better switching and iCloud integration.
Apple Os Mountain Lion Download
Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.
- macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
- OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard
- OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion, or Snow Leopard
Install macOS
Follow the onscreen instructions in the installer. It might be easiest to begin installation in the evening so that it can complete overnight, if needed.
If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs macOS and related firmware updates.
Learn more
You might also be able to use macOS Recovery to reinstall the macOS you're using now, upgrade to the latest compatible macOS, or install the macOS that came with your Mac.
OS X 10.8.5 Mountain Lion signifies a different landing on Apple's chip towards regular OS X updates: Mountain Lion is truly unique in boasting some exceptional features to the world of the desktop operating system. In terms of newly added features, Apple's ninth major hit would certainly carry the day over previous releases.
Apple Os Mountain Lion
The Mountain Lion goes an extra mile and introduces more thorough integration with iCloud and iOS. Further, it had given a Midas touch to Safari 6, offered Seamless AirPlay Mirroring on HDTVs, and positively the bettered notification centre and messages certainly are the big enhancements to the desktop workspace. The newly proclaimed malware blocking system 'Gatekeeper' had also made the appearance through this release.
Mac OS X Mountain Lion 10.8.5 Download
Program Details | |
---|---|
Setup Name: | Mountain_Lion_10.8_Installer.dmg |
Size on Disk: | 4.05 GB (434,865,438,72 bytes). |
Official: | Apple Inc./apple.com/macos. |
Editor's Ratings: | |
Compatibility: | MacBook (Pro, Mini), Xserve & iMac . |
The big cat macOS brings along some new abilities and refinement to your favourite browser, now the way tabs were appearing has changed a bit, and security-wise the Safari seems on the level. Other notable improvements to Safari include smart search, top hits display, better switching and iCloud integration.
Moreover, there introduced numerous new cloud features that come along integrated with several applications. the Setup Assistant would let you sign-in through the Apple ID where you can sync your settings and applications.
Another exciting feature that we couldn't resist taking into consideration is AirPlay mirroring. Previously it was on the iPad, and now brought to the big screen, let's say for an Apple TV, you can now broadcast favourite HD movies and other media from your desktop to an HDTV.
Setting up AirPlay is no sweat — Just connect your Apple TV and MAC over the same wireless network AirPlay icon will prompt at the right corner, there select the Apple TV from the drop-down and rest of the process is self-explanatory.
Some Outstanding Features Are
Below are some other notable features that you'll experience with this upgrade.
- Augmented integration for third-party applications.
- Offered sharing options like iOS.
- Bettered content management over the Cloud.
- Modish and revised Safari browser.
- Support for all Apple devices.
- New malware blocking system had been promoted Gatekeeper introduced.
- Auto-save to access an earlier version of the content.
- Claims a more responsive notification centre.
What's More?
There were some previously reported issues with screen saver and smart card, that had been effectively fixed. Furthermore, security enhancements and file transfer performance had also been approved with the release.
Talking about the file document management and sharing, thanks to the Cloud technology for making it more easygoing for those who work across Mac and iOS devices. Another feature that has bagged our attention was the 'iOS-styled' share buttons, that are all across the operating system. This feature would allow you to share the content over email, AirDrop, Flicker, Messages, Twitter, Vimeo, and Facebook. Pubg download macbook air.
Finally, about upgrading to Mountain Lion which couldn't be more straightforward — merely it expects and internet connection that could grab a handful of 4 GB data.