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I recently took possession of a 2010 iMac with a bad hard drive. I replaced the hard drive with an SSD, and am now trying to create a bootable USB to install High Sierra OS on the iMac. Using my Mac air, and following the instructions on the Apple Store page, I tried to download high Sierra, but each time my system preferences software update launches and I get a message that "OS cannot be found".
What am I doing wrong?
Open in Safari, Firefox won't work.
Open in Safari, Firefox won't work.
Just to add, if the Mac you are trying to download to came with Mojave or Catalina, you may not be able to download High Sierra.
I'm wondering if that is the problem. I'm trying to do this on a newer Mac air running the latest OS.
Probably. I don't have a new enough Mac to test but I've read posts where people couldn't download an installer older than what their Macs shipped with.
Create a High Sierra Bootable USB
