Your Mac will reboot and you can begin using your new, freshly installed (and ideally trouble-free) copy of OS X Mountain Lion. If you're installing Mountain Lion on a hard disk for the first time, however, you still have one last step to complete. After your Mac reboots, the Setup Assistant window appears. 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. However, that's only the bare minimum; if you plan to install Mac OS X.
OS X Mountain Lion is the latest release of the world's most advanced desktop operating system. Mountain Lion includes over 200 new features to update your Mac into the best computing experience yet. Mac OS X Lion 10.7 ISO / DMG file Direct Download. August 23, 2019. Mac OS X Lion 10.7. There are two different types of OS one is Mac OS X Lion 10.7 ISO, DMG and the other one is OS X mountain lion. So please don't get confused in both OS. Mac OS X Lion 10.7 is the eighth major release of Mac OS X is a completely different version from the for windows because it is a version that is totally based on the productivity suite for mac os x. Here's how to install (or reinstall) OS X, step by step: Boot from your Recovery HD partition by restarting your Mac while holding down the cmd+R keys. The OS X Utilities window. The Mountain Lion software license agreement screen appears. Read it and click Agree. A sheet drops down, asking.
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.
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 your Mac doesn't have enough free storage space for the installation, or that the installer is too old to be opened on this version of macOS.
If you want to check compatibility before downloading the installer, learn about the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan, or Yosemite. You can also check compatible operating systems 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.
These installers from the App Store open automatically after you download them:
- 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, Lion
Os X Mountain Lion Disk
Your web browser 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
Your Mac will reboot and you can begin using your new, freshly installed (and ideally trouble-free) copy of OS X Mountain Lion. If you're installing Mountain Lion on a hard disk for the first time, however, you still have one last step to complete. After your Mac reboots, the Setup Assistant window appears. 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. However, that's only the bare minimum; if you plan to install Mac OS X.
OS X Mountain Lion is the latest release of the world's most advanced desktop operating system. Mountain Lion includes over 200 new features to update your Mac into the best computing experience yet. Mac OS X Lion 10.7 ISO / DMG file Direct Download. August 23, 2019. Mac OS X Lion 10.7. There are two different types of OS one is Mac OS X Lion 10.7 ISO, DMG and the other one is OS X mountain lion. So please don't get confused in both OS. Mac OS X Lion 10.7 is the eighth major release of Mac OS X is a completely different version from the for windows because it is a version that is totally based on the productivity suite for mac os x. Here's how to install (or reinstall) OS X, step by step: Boot from your Recovery HD partition by restarting your Mac while holding down the cmd+R keys. The OS X Utilities window. The Mountain Lion software license agreement screen appears. Read it and click Agree. A sheet drops down, asking.
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.
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 your Mac doesn't have enough free storage space for the installation, or that the installer is too old to be opened on this version of macOS.
If you want to check compatibility before downloading the installer, learn about the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan, or Yosemite. You can also check compatible operating systems 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.
These installers from the App Store open automatically after you download them:
- 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, Lion
Os X Mountain Lion Disk
Your web browser 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 both macOS and related updates to your Mac firmware.
Learn more
Os X Mountain Lion Installer
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.
