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AutoPkg recipes for macOS Sierra, OS X El Capitan and OS X Yosemite OS installers now available
Now that Apple has made direct download links available for older OS installers, I’ve written AutoPkg .download and .pkg recipes for the following macOS installers:
These recipes will download the disk images linked to the relevant KBase articles, extract the installer packages stored inside the disk images and rename the disk images and installer packages with the OS name and version number.
One thing to be aware of is that the downloaded installers do not themselves install the relevant version of macOS or OS X. Instead, they install the Install.app for that version of macOS or OS X into the /Applications directory.
The AutoPkg recipes are available via the links below:
Der Flounder 
Hi
I downloaded El Capitan from the link above and launched it to have Install OS X El Capitan.app in /Applications.
One thing i noticed is, it gives me different hash of InstallESD.dmg each time i redo the procedure. The timestamp is different too.
E.g.
Step 1. making sure there is no existing Install OS X El Capitan.app in /Applications, launch the InstallMacOSX.pkg then take note of the InstallESD.dmg hash.
Step 2. Doing the Step 1 again.
Result: Im getting 2 different hash result of InstallESD.dmg
Is this normal?
Also, there are still problems with the “Install macOS Sierra.app”. Unfortunately it seems to be not possible to create a bootable installer – you will always get an mount error (tried this the classic Terminal way and also with different Installer Tools/Apps) on different machines and with different USB-attached devices.