![]() ![]() Once the OS is installed, update to later versions of macOS Sierra as a post-installation task.Boot Camp and Boot Camp Assistant allow you to install Windows on your Mac. Since the new behavior is specific to the 10.12.4 installer, my recommendation at this point is to use the macOS 10.12.3 installer where needed. Run time of the pre-edited video was 20 minutes 9 seconds. Note: The video has been edited to artificially reduce the amount of time the OS installation process takes to run. To show what this behavior looks like, please see the video below: This time, the installation process of the third party installer package should succeed. Once the NetInstall set is built, boot a Mac or VM from the NetInstall set and run the OS installation process. Change no other options from their defaults. Select option to add an additional installer and add the signed third-party installer package.ĥ. usr/bin/productsign -sign 'Developer ID Installer: Name Goes Here (FT45CST65F)' "/path/to/First Boot Package Install.pkg" "/path/to/other/place/First Boot Package Install.pkg"Ĥ. A third-party installer package which has been signed with a Developer ID Installer certificate.įor my third-party installer package, I used the same firstboot package created earlier and signed it using the productsign utility and my Developer ID Installer certificate.To replicate the successful install behavior, use the process shown below: Run time of the pre-edited video was 21 minutes 18 seconds. In my testing, the OS install process has consistently failed when trying to install the unsigned third-party installer package. Change no other options from their default settings. Select option to add an additional installer and add the unsigned third-party installer package.ĥ. Select option to build a NetInstall ImageĤ. Select the macOS 10.12.4 installer as the source.ģ. A unsigned third-party installer packageįor my third-party installer package, I used one created by First Boot Package Install Generator.app.Ģ. ![]() To replicate the failure behavior, use the process shown below: Otherwise, the only installer packages I’ve seen which install correctly are packages which have been signed by Apple itself.Īs mentioned previously, Apple’s System Image Utility is affected by this issue. If the package is signed with a Developer ID Installer certificate.If you are building a NetInstall NetBoot set using System Image Utility.In testing done by myself and others, we have found that there is one circumstance where you can still add a third-party installer package: The error message displayed is misleading however, as this message may also appear if the package has been signed with a Developer ID Installer certificate. Quit the installer to restart your computer and try again. The package "Package Name Goes Here" is not signed. At that point, the installation process fails and displays the message shown below: In each case, the OS install process proceeds without issues until the OS installer tries to install the third party installer package. Note: There may be others, this list is what I’ve tested. In my testing, I’ve verified the following tools are affected: With the release of macOS 10.12.4, it appears that Apple has made a change to the OS installer that blocks the installation of third-party packages which have been added to the OS installer. ![]()
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