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Apple Computing Products:
macOS - Operating System
Help! Clean installing Mountain Lion over Mountain Lion!
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<blockquote data-quote="chscag" data-source="post: 1430182" data-attributes="member: 46727"><p>If you used the Lion Disk Maker utility, it properly formatted the USB drive and made it bootable. Are you holding down your Option key and booting from the USB drive? That is what you need to do to install.</p><p></p><p>You'll see an option on the screen that says "EFI Boot" and an icon of the disk drive. Just select it and press enter. That will take you to the ML utilities screen where you can erase the drive and do a clean install. Let us know if that works for you.</p></blockquote><p></p>
[QUOTE="chscag, post: 1430182, member: 46727"] If you used the Lion Disk Maker utility, it properly formatted the USB drive and made it bootable. Are you holding down your Option key and booting from the USB drive? That is what you need to do to install. You'll see an option on the screen that says "EFI Boot" and an icon of the disk drive. Just select it and press enter. That will take you to the ML utilities screen where you can erase the drive and do a clean install. Let us know if that works for you. [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Help! Clean installing Mountain Lion over Mountain Lion!
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