Install Mac Os X Mountain Lion.app
Install Mac Os X Mountain Lion App Download

macOS Big Sur elevates the most advanced desktop operating system in the world to a new level of power and beauty. Experience Mac to the fullest with a refined new design. Enjoy the biggest Safari update ever. Discover new features for Maps and Messages. And get even more transparency around your privacy.

Singer Sewing Machine Serial Number Database When was my sewing machine made? What model do I have? Singer has recently pulled some of their dating and identification information from their website. Here you can look up your serial number and find out when your Singer Sewing Machine was made as well as what model you have. On pre-1900 Singer machines if there are two serial numbers, always use the higher, longer, larger, serial number of the two to date your machine. Pre 1900, 19th Century, Victorian Singer sewing machine serial numbers. Sewing machine serial number database. Antique Singer Sewing Machines by Serial Number 1871 -1950 The first Singer sewing machine was manufactured in 1851, but some of the logbooks from that time period were lost. Because of this, there are no available serial numbers for the years from 1851 to 1870. If there are no letters in the serial number on a machine, you can be sure that it was.

Check compatibility

Download the latest version of OS X Mountain Lion for Mac - The final update for OS X 10.8. Read 203 user reviews of OS X Mountain Lion on MacUpdate. Access to a Mac to download OS X Mountain Lion from App Store and prepare UniBeast USB Drive. A minimum of 8GB or larger USB flash drive. A PC capable of running OS X Mountain Lion. Step 1: First and foremost, this process requires that you own a copy of Mac OS X Mountain Lion (10.8) and a USB drive with a minimum capacity of 8GB. Apple 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. With the new Messages app you can send text, photos, videos, contacts, Web links, and documents to anyone using another Mac, iPhone, iPad. In theory, you should have to install Mountain Lion only once, or never if your Mac came with Mountain Lion preinstalled. And in a perfect world, that would be the case. But you might find occasions when you have to install/reinstall it, such as If you get a Mac that didn’t come with OS X.

macOS Big Sur is compatible with these computers:

MacBook introduced in 2015 or later
MacBook Air introduced in 2013 or later
MacBook Pro introduced in late 2013 or later
Mac mini introduced in 2014 or later
iMac introduced in 2014 or later
iMac Pro
Mac Pro introduced in 2013 or later
View the complete list of compatible computers.

If upgrading from macOS Sierra or later, macOS Big Sur requires 35.5GB of available storage to upgrade. If upgrading from an earlier release, macOS Big Sur requires up to 44.5GB of available storage. To upgrade from OS X Mountain Lion, first upgrade to OS X El Capitan, then upgrade to macOS Big Sur.

Make a backup

Before installing any upgrade, 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.

Get connected

It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.

Download macOS Big Sur

If you're using macOS Mojave or later, get macOS Big Sur via Software Update: Choose Apple menu  > System Preferences, then click Software Update.

Or use this link to open the macOS Big Sur page on the App Store: Get macOS Big Sur. Then click the Get button or iCloud download icon.

Begin installation

After downloading, the installer opens automatically.

Click Continue and follow the onscreen instructions. You might find it 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.

Install mac os x mountain lion app download

Allow installation to complete

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.

Stay up to date

Install Mac Os X Mountain Lion.app

After installing macOS Big Sur, you will be notified when updates to macOS Big Sur are available. You can also use Software Update to check for updates: Choose Apple menu  > System Preferences, then click Software Update.

Or get macOS Big Sur automatically

If you're using OS X El Capitan v10.11.5 or later and your App Store preferences or Software Update preferences are set to download new updates when available, macOS Big Sur will download conveniently in the background, making it even easier to upgrade. A notification will inform you when macOS Big Sur is ready to be installed. Click Install to get started, or dismiss the notification to install later. When you're ready to install, just open the file named Install macOS Big Sur from your Applications folder.

Install Mac Os X Mountain Lion App Download

Learn more

If the installer shows a list of apps that are not optimized for your Mac, learn about 32-bit app compatibility, then choose whether to proceed with the installation.
For the strongest security and latest features, upgrade to macOS Big Sur. If you have hardware or software that isn't compatible with Big Sur, you might be able to install an earlier macOS.
You can also 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.