Made a bootable El Capitan USB; press Option key and boot from El Capitan USB; Go to Utilities, Open Terminal, set date to, (that is July 06, 2017 at 10:50am; date is set about over 2 years prior current date, I just pick a random day in mid 2017 as suggested by Charlee78), exit Terminal; Proceed with OSX installation. I now have a running clean installation of El Capitan on an external Samsung EVO 860 SSD drive.

• Then, you clicked on the folder now in here, select the image file of Mac OS X El Capitan and click on the “Open” button. Select Mac OS X El Capitan ISO file. Within this step, you’re finished with the settings. Now is the time to make a digital machine to Mac OS X El Capitan. Consequently, you have to press on Create.
• Insert the disk 'macOSX10.11.6-15G31ElCapitanDownloadedDisk.dmg'. Open 'InstallMacOSX.pkg'. Follow the steps to install the package. When the installation is over, click on the Close button and eject the disk 'Install OS X'. Open a terminal, then.

The new OS X El Capitan features a new Split View, features in Safari, Mail, Notes, Maps, and Photos, and more. To get your hands on all this new stuff, you have to install the operating system on your Mac.

What Is Mac OS X El Capitan? This is the twelfth release from the Apple software stable. It succeeds OS X Yosemite and focuses on stability, performance, and security. As from the end of September 2015, it was released to end users, free of charge, from theMac App Store. Features Of Mac OS X El Capitan System Integrity Protection. How to Perform a Clean Install of OS X El Capitan. OS X El Capitan (OS X 10.11) offers two installation methods. This guide focuses on the 'clean install' method. When you install El Capitan on your current startup drive with the clean install method, you erase everything on the drive. That includes OS X, your user data, and personal files. I copied the CodeSignature folder from inside Install OS X Mountain Lion.app to the same position inside Install OS X El Capitan.app on the Flash drive. 4) Restart the Mac with option (alt) key pressed and you will be presented with bootable volumes. Select your Flash Drive using the keyboard arrow keys and press enter. Give it 5 mins to boot up.

If you want to perform a typical OS upgrade, it’s easy. You download it through the App Store. Here, we’ll go through the steps of installing EL Capitan from Yosemite.

It’s about preparation

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Before you install the upgrade, there’s a little bit of prep work you should do. Our article on how to get your Mac ready for OS X 10.11 El Capitan is what you should read before you proceed. It covers:

• Compatible hardware and older versions of OS X
• Verifying the health of your Mac
• Installing updates
• Backups
• Encryption issues

Go read that article and come back here when you’re ready to go.

How to download El Capitan

Apple provides the El Capitan upgrade through its App Store. The download is a bit over 6GB, so you may want to download it at a time when you have other things to do—how long the download takes depends on your Internet connection and the amount of activity at the App Store. Or you can use your Mac while you wait, but be ready to save your work and quit when the download is done.

To download El Capitan, launch the App Store app in your Applications folder (or go to Apple menu > App Store). You’ll probably find El Capitan right away, especially if go to the App Store soon after the official release. Apple will probably have a banner at the top promoting El Capitan, but if you don’t see one, you can probably find it in the Free section in the far right column (you might have to scroll down to see it). And you can always do a search on El Capitan.

When you get to the El Capitan page in the App Store, click on the Download button. You may have to enter your Apple ID name and password, and after you do, the installer will download.

Copy the installer

Mac Os X El Capitan Install Disk Usb

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When the download finishes, the installer automatically launches. Mac app windows. Don’t click Continue in the installer just yet. What you may not know is that the installer is downloaded to your Applications folder and then deleted after the installation is done.

If you ever need the installer again, you can get it in the App Store. But I like to make a copy of the installer. I often have to perform OS installations, so I make a bootable flash drive that I can use; it’s a lot faster than waiting for the download.

To copy the installer, you need to hold down the Option key as you drag the Install OS X El Capitan app in your Applications folder to the copy destination. If you don’t hold down Option, you’ll create an alias, not a copy.

Install El Capitan

OK, now you can click that Continue button in the installer window. (If the installer isn’t running, go to your Applications folder and double click the Install OS X El Capitan app.) You’ll be asked to agree and then confirm that you agree to the license agreement.

The next screen will ask you to select the disk for the El Capitan installation. If you have one storage device with one partition, you’ll see it in the installer window. But if you have multiple storage devices and/or multiple partitions, you can select the one you want by clicking the Show All Disks button. Make your selection and click Install.

To continue, you must enter your username and password. The install will prepare to install, restart your Mac, and perform the installation. The Mac may restart again during the installation process. The install will take several minutes, so you may want to go for a walk, call your mom, take a nap, or catch up on chores while the software does its thing.

When the installation is finished, the Mac will restart and you’ll need to log in with your username and password. You may be asked if you want to send diagnostic data to Apple and that you need to log in with your Apple ID, and then a setting up screen will appear and go away. You’re done.

Want to do a clean install of El Capitan?

A clean installation is when you install the operating system on a blank storage device. You can do this by creating a bootable El Capitan installer, and then use it as the boot drive for your Mac. You run Disk Utility to erase your drive and then proceed with the El Capitan installation.

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Once the installation is done, you use Migration Assistant to transfer your data from a Time Machine backup.

Install Os X El Capitan On A New Hard Drive

Why should you do a clean install? Maybe you partitioned your storage device and want to change the scheme. Or maybe you’ve installed and removed lots of apps over time and want to get right of any lingering software components—if this is the case, don’t restore your data from a Time Machine backup. Manually copy your files and reinstall your software.