Macos - This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading - Ask Different This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading. Once you've done that, here's how to install, reinstall, or upgrade to El Capitan, step by step: Boot from your Recovery HD partition by restarting your Mac while holding down the Command+R keys. The OS X Utilities window appears. Select Reinstall OS X, and click Continue.
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 state 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 you're plugged into AC power and have a reliable internet connection.
These installers from the App Store open automatically after they've been downloaded:
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite and Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks and Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion and Lion
Your web browser will download 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 will install an app named Install [Version Name]. Open that app from your Applications folder to start 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 start the installation in the evening so that it can be completed 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.
Download os x mountain lion installer. Please allow the installation to be completed without putting your Mac to sleep or closing its lid. Your Mac may restart, display a progress bar or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
Learn more
You might also be able to use 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.
I need to download the El Capitan to install on my Mac computer. What is the best place to download the El Capitan dmg or El Capitan iso.
Is this a good question?
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El Capitan Won't Install
I've been looking for El Capitan for weeks and today I finally managed to get it.
The Appstore no longer has OS X El Capitan available to download.
To solve this issue follow this link: http://bit.ly/ElCaptanOriginalOSX
El Capitan Won T Install
El Capitan Won T Install
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The Appstore only has updates but not the original OS. So If you did not download El Capitan before it was removed from the App Store then you will not be able to get it from the Appstore anymore. You can now only download it via alternative sources, Just make sure they are trusted sources though. Hence I recommended the link above.
Hope this helps you also.
@Kate smith, They are illegally selling Apples software !
Mac Os El Capitan Install
Find the official installers here
Infographic over the many versions of OSX/macOS
@katemor Its not true that App Store no longer has El Capitan as download. It does not have it as download, if your Apple-ID has never registered a machine with El Capitan. Otherwise they are still there.
Install El Capitan From Usb
And your link points to a place, which charges $20 for Apple software. Not quite legal..
