I want to make a USB media installer for the new High Sierra release. I commonly use createinstallmedia or DiskMakerX but for this new release I just can't make it work (both). I downloaded the Install macOS High Sierra.app from the App Store but the installer is only 14.2mb so it doesn't contain the High Sierra image. I started the installer and that starts the download but all the downloaded files are stored in ./macOS Install Data and I want to make a USB media installer with those files.
Any idea of how to solve this?
Also in createinstallmedia i'm using this command:
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/macOS --applicationpath /Applications/Install\ macOS\ High\ Sierra.app --nointeraction
and i'm getting:
/Applications/Install macOS High Sierra.app does not appear to be a valid OS installer application.
Screenshots:
Best Answer
Massive bump to @IlyaB, I was stumped trying to get the full 5gb Install MacOS High Sierra.app but was stuck with the 19mb stub version.
My Process to get a working app that is currently making my bootable USB for High Sierra
1: Go to Mac App Store and download High Sierra (the 19mb stub)
2: Click Continue in the installer app once it downloads
3: Choose your boot disk (or any disk that has space)
4: Allow the installer to download (this is the contents of the missing "SharedSupport" folder within the installer stub)
5: The installer will prompt you to restart after finishing the 5gb download, at this point quit the installer and do not restart your system!
6: Go to your root (or whichever location you chose in step 3) and find the folder "macOS Install Data"
7: Copy the contents of that folder disregarding .DS_Store
(9 files, folders, dmgs, pkgs, and plists)
8: Go to your Applications folder where the Mac App Store downloaded the stub version of "Install macOS High Sierra"
9: Right Click on that file and "Show Package Contents"
10: Within the Contents folder, create a new folder called "SharedSupport"
11: Paste the files you copied earlier from the installer download
12: And you're done! You should have a fully functional Installer file for bootable USB drives or just copying to other systems whether they be offline, or you just don't want to download the installer over and over.
I am currently in the lengthy process of creating a bootable USB drive to make a Coffee Lake i7 8700k Hackintosh build. I'm following this guide with the recommended motherboard. I'll try to update here with my success/ failure.