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Level 1

4 points

can't install OS on old laptop for trade-in

I'm trading in my MacBook Pro, trying to reinstall OS X El Capitan and keep getting message:

a required download is missing.

How do I get around this?

MacBook Pro

Posted on Dec 9, 2020 8:27 AM

Top-ranking reply

Level 9

60,452 points

Posted on Dec 9, 2020 9:06 PM

Try creating a bootable macOS USB installer using the instructions in this Apple article:

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