I am using macOS Catalina and want to install OS X El Capitan on an external HDD. How can I do this since I am unable to open the pkg to install the installer?
Mac Pro, OS X 10.10
Hello,
Please refer to the following Apple Support document.
How to create a bootable installer for macOS - Apple Support
Hi,
"El Capitan downloads as a disk image. On a Mac that is compatible with El Capitan"
On a Mac that is compatible with El Capitan. I am trying to create a bootable El Capitan installer from a macOS Catalina (and hence non El Capitan compatible) machine.
To perhaps explain in more detail
I have a Mac Pro early 2008 machine and a Mac Pro 2019 machine. I've forwarded the early 2008 machine drives (unaware than getting the installer is going to be so challenging). I am unable to open the El Capitan package to get the installer on my 2019 machine.
I just need a bootable version of El Capitan, or to install on an external hard drive so I can reboot my early 2008 machine.
Thanks
Install OS X El Capitan on an external HDD from macOS Catalina
