Skip to content

Instantly share code, notes, and snippets.

@Wowfunhappy
Last active December 1, 2025 02:20
Show Gist options
  • Select an option

  • Save Wowfunhappy/ced9aa23ddaaef7075f6c234f685e01b to your computer and use it in GitHub Desktop.

Select an option

Save Wowfunhappy/ced9aa23ddaaef7075f6c234f685e01b to your computer and use it in GitHub Desktop.
Download a Mac OS X 10.9 Mavericks installer image Apple

The Mac OS X 10.9 Mavericks download script is now hosted on Mavericks Forever. To download Mavericks, open a Terminal on any Mac and run:

curl mavericksforever.com/get.sh | sh

Or, navigate directly to mavericksforever.com/get.sh to read what the script does.

@Wowfunhappy
Copy link
Author

Wowfunhappy commented Dec 1, 2025

So great news , after a few failed attempts (Could Not Unmount Volume etc.) , I found that having the finder window open showing the volume stopped it being unmounted for some weird reason. Also at the end I got an ASR error , but I think that was just trying to rename the USB.

Odd, I'm not immediately sure what to do about that. (I know you got it working but it's a shame it wasn't a smoother experience.)

One last question , any guess why the Installer I can download from an old OS App Store will not just work using the createmedia tool? and any idea why when I try to look inside the app contents the shared system InstallESD.dmg is reporting itself as corrupt?

If I recall correctly, the InstallESD.dmg inside the App Store's Mavericks installer was never restorable, even when Mavericks was current. But of course createinstallmedia worked at one point.

From what I understand, Apple updated the App Store Mavericks installer some years back to re-sign a certificate or something, but ended up breaking it. Or something like that, haven't looked into this closely—but It's not only broken for you!

@Sixxdog-UK
Copy link

Many thanks , that explains a lot.

Congrats again with the great work in automating the whole process. 👍👍

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment