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Apple Computing Products:
macOS - Desktop Hardware
iMac Mid 2011 21´5 White screen
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<blockquote data-quote="harryb2448" data-source="post: 1774379" data-attributes="member: 42497"><p>Okay your USB whatever is not bootable.</p><p></p><p>With another Mac go to the App Store and download Sierra using your Apple ID and download a new copy. Download Diskmaker X. Pop in an +8GB USB thumb drive and go to Disk utility and format the thumb drive. Into Applications Folder and follow Diskmaker's instructions. When you have a valied copy, reboot, hold down 'C' and when it loads go into Utilities and format the new hard drive and then back to the Installer and let it run and complete the install and then do an update to OS X.12.6.</p><p></p><p></p><p><a href="http://diskmakerx.com" target="_blank">http://diskmakerx.com</a></p></blockquote><p></p>
[QUOTE="harryb2448, post: 1774379, member: 42497"] Okay your USB whatever is not bootable. With another Mac go to the App Store and download Sierra using your Apple ID and download a new copy. Download Diskmaker X. Pop in an +8GB USB thumb drive and go to Disk utility and format the thumb drive. Into Applications Folder and follow Diskmaker's instructions. When you have a valied copy, reboot, hold down 'C' and when it loads go into Utilities and format the new hard drive and then back to the Installer and let it run and complete the install and then do an update to OS X.12.6. [url]http://diskmakerx.com[/url] [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
iMac Mid 2011 21´5 White screen
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