Forums
New posts
Articles
Product Reviews
Policies
FAQ
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Menu
Log in
Register
Install the app
Install
Forums
Apple Computing Products:
macOS - Operating System
Upgrade OS
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="ferrarr" data-source="post: 1771420" data-attributes="member: 376394"><p>You can not erase a drive you are booted from. </p><p></p><p>Use this, <a href="https://support.apple.com/en-us/HT206886" target="_blank">https://support.apple.com/en-us/HT206886</a>, and get El Capitan downloaded to the iMac. Before installing El Capitan, make sure any important data has been backed up to a separate drive. Next, you should create a bootable USB/flash/thumb drive (minimum 8GB) and then use that to install El Capitan. I prefer this method, <a href="https://support.apple.com/en-us/HT206886" target="_blank">https://support.apple.com/en-us/HT206886</a>, to create the bootable USB OS X installer, but others prefer to use Disk Maker X, <a href="http://diskmakerx.com/" target="_blank">http://diskmakerx.com/</a>, to create the drive, use whichever you feel comfortable with.</p></blockquote><p></p>
[QUOTE="ferrarr, post: 1771420, member: 376394"] You can not erase a drive you are booted from. Use this, [URL]https://support.apple.com/en-us/HT206886[/URL], and get El Capitan downloaded to the iMac. Before installing El Capitan, make sure any important data has been backed up to a separate drive. Next, you should create a bootable USB/flash/thumb drive (minimum 8GB) and then use that to install El Capitan. I prefer this method, [URL]https://support.apple.com/en-us/HT206886[/URL], to create the bootable USB OS X installer, but others prefer to use Disk Maker X, [URL]http://diskmakerx.com/[/URL], to create the drive, use whichever you feel comfortable with. [/QUOTE]
Verification
Post reply
Forums
Apple Computing Products:
macOS - Operating System
Upgrade OS
Top