How to create a bootable USB installer for macOS High Sierra (App Store link missing)

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Level 1

4 points

How to create a bootable USB installer for macOS High Sierra (App Store link missing)

Hello,

I’m trying to create a USB installation drive for macOS High Sierra in order to reinstall macOS on an Intel Mac.

Unfortunately, I can no longer download the full “Install macOS High Sierra.app” from the Mac App Store — the official link appears to be unavailable.

What is the current Apple-supported method to create a bootable USB installer for macOS High Sierra?

Thank you in advance for your help and for any official, updated references.

— Stefano

Earlier Mac models

Posted on Oct 30, 2025 1:30 AM

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Answer 1

Rudegar

Level 10

179,856 points

Oct 30, 2025 1:58 AM in response to ascot

Create bootable installer for High Sierra… - Apple Community

How to create bootable installer for High Sierra on Ventura? : r/MacOS

How to create a bootable macOS High Sierra USB Install drive

Create a bootable installer for macOS - Apple Support

more

How to create a bootable USB installer for macOS High Sierra - Google-

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Answer 2

HWTech

Level 9

68,198 points

Oct 30, 2025 8:56 AM in response to ascot

FYI, most Macs compatible with High Sierra also can boot into Internet Recovery Mode using Command + Option + R (one exception is the Late-2009 iMac).

Edit: You may need to use Fix #3 in the following article if you get a "Recovery server could not be contacted" error message when using Internet Recovery Mode.

https://mrmacintosh.com/how-to-fix-the-recovery-server-could-not-be-contacted-error-high-sierra-recovery-is-still-online-but-broken/

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Answer 3

ascot Author

Level 1

4 points

Oct 31, 2025 12:38 AM in response to ascot

Thank you all for your help!

@HWTech — your link was absolutely precious and decisive in solving my problem.

If anyone else encounters the same issue, I strongly recommend following the method explained in that article.

Thanks again for your time and support!

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