Recently became the go-to for the Casper system at my company, and my first project is to make sure all of the Macs are upgraded to the latest version of Sierra.
I am following this guide: Here but running into issues. I can get the install.esd package and cache fine, but when I try to install the cached package I get the following error
Failed to copy file to the install data folder. Failed to copy /Volumes/OS X Base System/Install macOS Sierra.app/Contents/Resources/brtool to /OS X Install Data/brtool: The file “brtool” couldn’t be opened because there is no such file.
Is this Technical Paper still the recommended process?
I have seen older threads recommending third party software, but I would like to avoid that if possible.
