

You can change it back to a standard user when you're finished. If it isn't, go to Users & Groups in System Preferences and assign Administrator to your user account.

But what if you need to partition the hard drive, wiping the recovery partition? You need a bootable OS X Yosemite installer.

But if your running macOS Catalina, macOS Mojave, or macOS High Sierra so you can easily download and install macOS X El Capitan on your Mac with download Mac OS X El Capitan DMG file.How do you erase your Mac hard drive and install OS X Yosemite without a startup disk? Normally the answer would be to boot into recovery mode. That’s not because it’s useful, but its also a way for unsupported Macs to download and install this version since they can’t install macOS Catalina and newer versions. The reason OS X El Capitan is still in approach for Mac users. In terms of installing, there are no specific requirements so after you’ve the file, you can install it instantly.

You can download this file as easy as clicking on the link and this file isn’t available on the App Store as you typically search for macOS X El Capitan. This is download Mac OS X El Capitan DMG file.
