In this example its named “MyBlankUSBDrive”: # "Install OS X El Capitan.app/Contents/Resources/createinstallmedia" -volume /Volumes/MyBlankUSBDrive -applicationpath "Install OS X El Capitan.app" Make sure you’ve attach another disk which can be overwritten by the installer.
Now we can try to create the install media from the installer app. $ pkgutil -expand InstallMacOSX.pkg elcapitanĭistribution* InstallMacOSX.pkg/ Resources/ Open the Terminal from inside the Recovery Mode.You’ll need enough space on that Disk to extract the pkg and it needs to be writeable Attach an external Disk which contains the downloaded pkg from Apple.Luckily I’ve found this blog post from Chris Warrick who explained how to extract the installer App from the package: You cannot execute the package installer in Recovery Mode to extract the media. The 2009 MacbookPro is already wiped and has only access to the recovery mode.However, I need access to the installer so that I’m able to use the createinstallmedia command. I cannot use the package installer from the download provided by Apple to create the installer App for El Capitan. I’ve only got a Mac with Big Sur and Apple Silicon.I’ve wiped all data from the installed SSD and had to boot from an external disk. It’s the model MacbookPro5.5 and Apple supports macOS El Capitan 10.11 as latest available version.
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