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.
洗練された新しいデザイン。かつてないほど進化したアプリ。プライバシーのために高められた透明性。macOS Big Surは、Macのパワーと美しさを次のレベルへ引き上げます。. Mountain Lion is really just a ‘super’ update of Lion. The ML graphical interface is still the same as Lion’s so they should just have made it a update of Lion, of course they have to compete with Microsoft’s Windows 8 so fell into the temptation. AppraisalPort simplifies the ordering, delivery, uploading, communication, and automated reviewing of residential appraisals. Mortgage lenders streamline their appraisal management process, and appraisers organize their work process to a simple management platform where they receive and deliver their appraisal orders directly to the lender. 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.
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.
It takes time to download and install macOS, so make sure that you're plugged into AC power and have a reliable internet connection.
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
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.
Upgrading To Mavericks From Mountain Lion
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.
How To Update To Mavericks From Mountain Lion
- “Appraisal Port is an intuitive and easy to use platform.
It is an efficient way for us to interact with our clients while
maintaining compliance with regulations. It’s an
essential tool for managing our business.”
- “Simple log-in, automatic report acceptance and seamless
integrated delivery system maximize my clients’ and my time. In
addition, regular polls and newsletters enhance the
sense of belonging to a community of appraisers.”- Susan Bender-McGoldrick, Lexington, VA.
- “It's nice that we can upload quickly and easily.
It's convenient to have all of our clients organized on
one site and makes it very efficient to receive orders.”
- “AppraisalPort provides the convenience of auto accepts and
receiving of orders, and the communication you receive on each one.
The GAAR option is great for checks and balances, and the rules can
fire back quickly and reject the report back to
appraisers to correct the fired rule.”- Norma Lorence, Williamston, Michigan
- “As an appraiser, I am able to post messages and
communicate 24/7. This has helped eliminate unnecessary phone calls
and callbacks which tend to grind up time. My productivity
has increased 25% since I can communicate using AppraisalPort.”
- “Castle Associates, Inc. strongly endorses AppraisalPort as an
essential tool for appraisers and lenders. AppraisalPort provides the
interface necessary to become the fastest and most efficient
appraisal firm in the Las Vegas Valley.”- Aaron Alyea, Las Vegas, Nevada
- “The structure of AppraisalPort allows for the
fastest turn times with the highest efficiency. The website is
reliable and simple to use. AppraisalPort is the premier
name in appraisal servicing.”
- “Appraisal Associates has had such success
with the system, it works beautifully, there is no lender pressure,
and we are freed up to do the job. I have increased
my production by 30%.”- L. Michael Gandy, Las Vegas, Nevada
- “Your staff always handles any problem that
comes my way in a courteous manner; they seem to understand how
difficult and challenging appraising can be. I would like to thank you
for the opportunity you have given Appraisal Associates.”
- “I love that it is so easy to add new clients through AppraisalPort.
Just a couple of clicks and we are connected.”- Clint Bruce, San Diego, California
- “I've used several appraisal ordering companies
over the years but when a lender asks me which one I prefer
and recommend I always tell them AppraisalPort.
Quick, easy to use, and reasonable fees.”
- “The few times I've had a problem; the customer
service department has gotten back to me quickly and
always resolved the issue. I wish all companies were
as caring and quick to respond.”- Clint Bruce, San Diego, California