Reinstall Mac Os X El Capitan

 

Remember, this method is not the same as a clean install, and it only reinstalls the version of OS X that is currently running on the Mac (shown here with El Capitan), whereas Internet Recovery will reinstall the version of OS X that shipped with the Mac (in this case it would have been Yosemite) instead. Obviously the versions of OS X will. Connect your MBP to your router via cable. Boot to your Recovery Drive ( Command + R ) click on Utilities in the menubar select Terminal and then change the date. Make sure your WiFi is switched off, top right of the menubar. Then choose Reinstall Mac OS X, from the main panel. See what happens.

2021-07-16 15:35:24 • Filed to: Tips of macOS • Proven solutions

You could have upgraded to macOS Sierra from El Capitan and you notice that your Mac is not running as expected. Your email may not work, apps may not respond or your battery may drain fast. This calls for downgrading to El Capitan (OS X 10.11). This might be difficult, especially if you don’t know how to revert macOS Sierra back to El Capitan. You don’t have to fret since this article show how to do so.

Reinstall

How to Downgrade Sierra to El Capitan

Before you downgrade to El Capitan you should ensure that

  • You have backed up any data that you added on macOS Sierra on a hard drive.
  • Do not backup with Time Machine.
  • Do not launch El Capitan installer on macOS Sierra since it will opt for the latest version which macOS sierra. Therefore you have to erase macOS Sierra before running El Capitan.
  • You are connected to Wi-Fi or Ethernet.

You can now follow these steps where you will have to erase macOS Sierra and then Reinstall El Capitan.

Step 1. Erase macOS Sierra

  • Select the item of 'Restart' from the 'Apple' menu of your Mac .
  • Now click on 'Command + R' until your Mac restarts.
  • Coming with OS X Utilities Window, choose 'Disk Utility' and then select 'Continue'.
  • Click 'Erase' button after entering the 'Startup Disk' item .
  • Now you have to name the file that to be erased and then choose 'Mac OS Extended (Journaled)' format. After that click on 'Erase'. From there you can now quit the Disk Utility and get to OS X Utilities again.

Step 2. Get OS X El Capitan Reinstalled

  • Select 'Reinstall OS' option fromOS X Utilities Window.
  • Reinstall El Capitan installer by clicking on 'Continue'.
  • Comply with the terms and conditions to reinstall it on your Mac.
  • Upon completion, your Mac will reboot. From there you can now restore your backup from Time Machine to your Mac.

Best PDF Editor for macOS Sierra

When you upgrade to macOS Sierra you will enjoy lots of advancements that comes to it. However, this might not be all good if you lack a PDF editor for macOS Sierra or High Sierra. You should not that not all PDF editors are compatible with this newest version. Therefore you need to download PDFelement. This software is a comprehensive tool for macOS Sierra that edits, comments, converts and also creates PDF files.

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  • You will be able to create PDFs from other PDF files, blank documents, HTML, Rich Texts, JPEG, GIF TIFF, BMP and PNG files.
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These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.

What you need to create a bootable installer

  • A USB flash drive or other secondary volume formatted as Mac OS Extended, with at least 14GB of available storage
  • A downloaded installer for macOS Big Sur, Catalina, Mojave, High Sierra, or El Capitan

Download macOS

Install el capitan os
  • Download: macOS Big Sur, macOS Catalina, macOS Mojave, or macOS High Sierra
    These download to your Applications folder as an app named Install macOS [version name]. If the installer opens after downloading, quit it without continuing installation. To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.
  • Download: OS X El Capitan
    This downloads as a disk image named InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.

Use the 'createinstallmedia' command in Terminal

Error installing mac os x el capitan
  1. Connect the USB flash drive or other volume that you're using for the bootable installer.
  2. Open Terminal, which is in the Utilities folder of your Applications folder.
  3. Type or paste one of the following commands in Terminal. These assume that the installer is in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. If it has a different name, replace MyVolume in these commands with the name of your volume.

Big Sur:*

Catalina:*

Mojave:*

High Sierra:*

El Capitan:

* If your Mac is using macOS Sierra or earlier, include the --applicationpath argument and installer path, similar to the way this is done in the command for El Capitan.


After typing the command:

  1. Press Return to enter the command.
  2. When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password.
  3. When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the volume is erased.
  4. After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume. Click OK to allow the copy to proceed.
  5. When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Big Sur. You can now quit Terminal and eject the volume.

Use the bootable installer

Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:

Apple silicon

  1. Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing.
  2. Turn on your Mac and continue to hold the power button until you see the startup options window, which shows your bootable volumes.
  3. Select the volume containing the bootable installer, then click Continue.
  4. When the macOS installer opens, follow the onscreen instructions.

Intel processor

  1. Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing.
  2. Press and hold the Option (Alt) ⌥ key immediately after turning on or restarting your Mac.
  3. Release the Option key when you see a dark screen showing your bootable volumes.
  4. Select the volume containing the bootable installer. Then click the up arrow or press Return.
    If you can't start up from the bootable installer, make sure that the External Boot setting in Startup Security Utility is set to allow booting from external media.
  5. Choose your language, if prompted.
  6. Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.

Learn more

Reinstall Mac Os X Without Cd

A bootable installer doesn't download macOS from the internet, but it does require an internet connection to get firmware and other information specific to the Mac model.

How To Reinstall Mac Os X El Capitan

For information about the createinstallmedia command and the arguments you can use with it, make sure that the macOS installer is in your Applications folder, then enter the appropriate path in Terminal: