Hey again. So I begin the process of running the small installer and it begins a process that very much appears to be an installation, not a download. Are you certain it downloads first and can be stopped before updating?
It seems Apple has changed things. The following is a link that tells how to download the installer and make a USB stick.
How to create a bootable installer for macOS
It doesn’t work anymore yet the date on it is February 10, 2021. What it does now is download the stub instead of downloading the full installer into the Applications folder. When you launch the stub it downloads all the install files and it puts them on the top level of the hard drive in a folder called macOS Install Data.
If you try and create a USB stick it fails since the full installer is not in the Applications folder.
You need to copy the files over from the macOS Install Data folder to the small installer.
To do that open Terminal and run these two commands, copy everything from sudo on.
Code:
sudo mkdir /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport
cd /macOS\ Install\ Data
Code:
sudo cp -p /macOS\ Install\ Data/* /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport/
You can now use the normal createinstallmedia command. Erase your USB stick and name it Untitled first.
Code:
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled/ --applicationpath /Applications/Install\ macOS\ High\ Sierra.app/ --nointeraction
If you don’t have the macOS Install Data folder yet you can download a program that’s supposed to allow for High Sierra on unsupported machines, but it also has the option to download the full installer. The link explains how to do it.
Download the tool and copy the patcher from the mounted DMG to your computer somewhere. To run the patcher application you’ll have to right click Open or the OS will complain about coming from an unidentified developer.
If you want to make a USB stick save the installer to your Applications folder. If you downloaded the small installer you’ll replace that with the full installer. Then you can follow the instructions above on how to make a bootable stick.
If you’ve already downloaded the High Sierra installer and you have the macOS Install Data folder on your hard drive, you can delete the contents once you make the full installer from the two commands above, but you cannot delete the empty folder unless you do the following.
- Restart your Mac in recovery mode(press and hold Command (⌘)-R at the start-up).
- Open the Terminal Utility
- Type the command csrutil disable
- Reboot and delete the folder
- Boot back into recovery and in terminal and type csrutil enable
- Reboot normally
- you can check the status after you reboot by typing in terminal csrutil status
I just tried this tonight and it does work.