(10.13) startosinstall --installpackage option does not properly handle multiple packages

Number:rdar://34979397 Date Originated:10/13/2017
Status: Resolved:
Product:macOS Product Version:10.13
Classification: Reproducible:Always
10.13's startosinstall tool has a new --installpackage option. This option fails to properly stage packages for install when multiple packages are given.

Steps to Reproduce:

1) /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/startosinstall --installpkg /path/to/pkg1.pkg --installpkg /path/to/pkg2.pkg --installpkg /path/to/pkg3.pkg --installpkg /path/to/pkg4.pkg

2) When the machine restarts after the macOS install is set up, the installer complains that "The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged." and tells you to restart and try again.

 You can reboot into an alternate startup disk and examine the (previous) target disk:

The paths for all given packages are added to macOS Install Data/InstallInfo.plist under the "Additional Installs" key, but not all are actually copied to the paths indicated. For example:

	<key>Additional Installers</key>

but the actual UnwrappedInstallers directory only has two of the packages:

$ ls -al macOS\ Install\ Data/UnwrappedInstallers/
total 0
drwxr-xr-x   4 root  wheel  136 Oct 11 10:11 .
drwxr-xr-x@ 16 root  wheel  544 Oct 11 10:13 ..
drwxr-xr-x   3 root  wheel  102 Oct 11 10:12 56609c54df6cc13597ea94d2ffd30540d7027dc7
drwxr-xr-x   3 root  wheel  102 Oct 11 10:12 6a0b81670c8f340ee2c51c98aa0572f5a8aa055b

I can manually copy the missing packages to the paths listed in InstallInfo.plist and then if I restart into the macOS Installer environment, install proceeds successfully and the extra packages are installed.

Expected Results:

macOS High Sierra is installed, followed by the installation of the additional packages.

Actual Results:

Installation fails with "The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged."


startosinstall from "Install macOS High Sierra.app", version 13.0.66, which contains macOS 10.13 Build 17A405


MacBookAir6,2, Intel Code i7 1.7GHz, 8GB RAM, 512GB SSD


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