Check compatibility

Apr 28, 2016 How to Secure Erase Free Space on Mac OS X El Capitan Drives via Command Line, Without Disk Utility Back up your Mac before attempting to use these commands. The command line requires precise syntax and is unforgiving, improper commands could lead to the unintended removal of data you do not want to delete, permanently, as this is a secure.

It appears that the newer (post-2012) Macbooks running El Capitan seem to be doing well. However, a few users point out that they have some challenges using the Mail App on their Macs after the upgrade to El Capitan. Specifically, readers report that their Mail app keeps crashing with El Capitan. For some unknown reason, I cannot delete the account in my Messages app: the minus button is grayed out. Strangely, everything worked just fine prior to all of this. When I was using the previous build of OS X El Capitan, continuity and handoff worked just fine—and they still work, perhaps better than before.

Rm -rf /Applications/Install OS X El Capitan.app/ This will remove the the install and sub-folders for the El Capitan installer. Open the Applications Folder by navigating to it or by pressing ShiftCommandA. Select the Install OS X App and Control Click or right click and select Move to Trash. The installer has been. Recently I downloaded El Capitan onto my Macbook Pro, and now I cannot seem to get into certain websites like facebook, or even the developer portion of the apple website. Strangely, I can get into every other part of apple's website, but not the developer portion. I had to download Firefox to get into it and write this post.

You can upgrade to OS X El Capitan from OS X Snow Leopard or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8.8GB of available storage space.

MacBook introduced in 2009 or later, plus MacBook (13-inch, Aluminum, Late 2008)
MacBook Air introduced in late 2008 or later
MacBook Pro introduced in mid 2007 or later
Mac mini introduced in early 2009 or later
iMac introduced in mid 2007 or later
Mac Pro introduced in early 2008 or later
Xserve models introduced in early 2009

To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with OS X El Capitan, the installer will let you know.

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 OS X, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.

Download OS X El Capitan

For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of macOS.

If you still need OS X El Capitan, use this link: Download OS X El Capitan. A file named InstallMacOSX.dmg will download to your Mac.

Install the macOS installer

Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallMacOSX.pkg.

Follow the onscreen instructions, which will guide you through the steps necessary to install.

Begin installation

After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install OS X El Capitan.

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.

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 OS X and related updates to your Mac firmware.

Mac El Capitan App Not Deleting Password

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Mac El Capitan App Not Deleting Google Chrome

• OS X El Capitan won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
• You can use macOS Recovery to reinstall macOS.