Mar 25, 2020 After the install, you do need to check that the time reset itself (and it should, by default, when you next connect to the internet.) El Capitan happens to be one that needs that bit of adjustment of the system time. (Apple likely won't fix it). Might be another.
May 15, 2020 The El Capitan installer is downloaded to the /Applications folder, with the file name Install OS X El Capitan. If you have already installed El Capitan and wish to now create a bootable installer, you can force the Mac App Store to re-download the installer.
Jun 01, 2020 If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite. Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac. Published Date: June 01, 2020.
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Reinstall El Capitan on a computer alreadyrunning it
Upgrade from previous versions to OS X 10.11 (El Capitan)
From the Apple menu, select App Store...
When the App Store opens, search for and download El Capitan. If you don't already have an Apple ID, you'll need to create one. You can monitor the download process in the 'Purchased' section of the App Store.
Once the download is complete, the installer should automatically open.
If it doesn't, or you don't want to complete the installation at this time, you can come back later and double-click Install OS X El Capitan in your Applications folder.
Within the installer, click Continue, agree to the license agreement, and then choose the disk where you want to install El Capitan.
After you begin the installation, your computer may need to restart more than once before finishing, and then you may be asked to enter basic information.
From the Apple menu, select App Store.., and then install any available updates.
Reinstall El Capitan on a computer already running it
To reinstall or recover El Capitan, you must have an active internet connection. If you are on campus at IU, UITS recommends the wired Ethernet network instead of wireless. However, if IUSecure is your only option, see Connect to an IU wireless network in macOS if booted from your Recovery HD.
Reinstall while keeping files, applications, and settings
Restart your computer, and immediately hold down command-r until the gray Apple logo appears.
If prompted, select your main language and then click the arrow.
Click Reinstall OS X, and then Continue. Follow the instructions on the screen, and then choose your hard disk. Click Install, and enter your Apple ID information if prompted.
When the installation is complete, select App Store.. from the Apple menu, and install any available updates.
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Reinstall while erasing everything on your computer
Restart your computer, and immediately hold down command-r until the gray Apple logo appears.
If you see a screen asking you to select your main language, choose it, and then click the arrow.
Click Disk Utility, and then Continue.
In Disk Utility:
Click your hard disk in the left column, and then click the Erase tab.
Next to 'Format:', make sure OS X Extended (Journaled) is selected. In the 'Name:' field, give your disk a name. Click Erase.
Once it's completed, quit Disk Utility.
Click Reinstall OS X, and then Continue:
Follow the instructions on the screen, and then choose your hard disk.
Click Install. If prompted, enter your Apple ID information.
Once the installation is complete, you'll be asked to enter basic information, and have the option to transfer data from another computer or backup.
From the Apple menu, select App Store, and then install any available updates.
Reinstall from macOS Recovery
macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.
1. Start up from macOS Recovery
To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.
Command (⌘)-R
Audio interfaces for el capitan macbook pro 2012. Reinstall the latest macOS that was installed on your Mac (recommended).
Option-⌘-R
Upgrade to the latest macOS that is compatible with your Mac.
Shift-Option-⌘-R
Reinstall the macOS that came with your Mac, or the closest version still available.
You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.
When you see the utilities window, you have started up from macOS Recovery.
2. Decide whether to erase (format) your disk
You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.
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3. Install macOS
When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.
If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time. Mac os asks for password to use my own key ssh file.
If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.
macOS Recovery exceptions
The version of macOS offered by macOS Recovery might vary in some cases:
If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.
If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.
Other ways to install macOS
You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.