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1.6 or 1.8 GHz dual-core processor, 2 GB or 4 GB of SDRAM, 64 GB or 128 GB SSD

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Why can't I restore MacOS on my MBA 2011?

2011 MBA had no issues, but I decided to install the OS fresh.

Not sure how to proceed, see my steps below:

MacOS Lion internet recovery:

I tried booting into the recovery partition of Lion. It works, but after accepting the license agreement, the installation downloads components from the wifi. It takes about 5 minutes, appears to successfully complete, and then errors out.

“An error occurred while preparing this installation. Please try running this application again.”

I’ve tried running it a few times, and it doesn’t work.

I ran disk utility and formatted the main partition just in case and tried again, still doesn’t work.

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Apple Hardware Test:

I charged up the machine fully and ran an Apple Hardware Test/diagnostic test at boot.

It seems to freeze around the minute mark.

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Boot from USB or CD:

  • I have a Superdrive, so I tried booting an old Snow Leopard CD I had. It seems the hardware is incompatible.
  • I downloaded Catalina and made a bootable USB (because older versions are no longer signed by Apple, I had to do Catalina)
  • I try booting from USB but clicking on Catalina gives me an [x] in the middle of the screen, because Catalina is too new and doesn’t support the MBA 2011.

What’s the best way to proceed?

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Yep! It won’t install !!

Apple has a time bomb in their OS’s, here’s an example when Apple messed up forgetting to update the certificate on the newer macOS’s If you've got an old macOS install image, it will probably stop working today

So we need to fake out the installer making it think it’s 2012 again! Then you can install the OS from a USB thumb drive (this won’t work with the internet install)

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Or, use terminal to do it Changing system date from Terminal – OS X recovery

But instead of going to the original OS the system came with how about just getting to the highest version your system can support - macOS High Sierra (10.13),

To do that via Internet recovery using the Option, and R keys when you reboot your system

Reference: How to reinstall macOS from macOS Recovery

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orun bhuiyan будет вечно благодарен.
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