ELCapitan USB booting command not found problem

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cpark74 Author

Level 1

4 points

ELCapitan USB booting command not found problem

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iMac, OS X 10.11

Posted on Dec 30, 2019 6:42 AM

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Answer 1

HWTech

Level 9

69,242 points

Dec 30, 2019 7:12 PM in response to cpark74

You need to double-click the .dmg file to mount it. Then you need to double-click the single file on the mounted .dmg volume which will "install" or rather copy the El Capitan installer to the "Applications" folder. Once this is complete, then you can run the Terminal commands to create the USB installer.

Here are the instructions in an Apple article:

https://support.apple.com/kb/HT206886

Here is the article for creating a bootable macOS USB installer:

https://support.apple.com/en-us/HT201372

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Answer 2

cpark74 Author

Level 1

4 points

Dec 30, 2019 6:54 AM in response to cpark74

My imac(2009 earlier version) troubled once. I reinstalled with the combined button "shift+option+command+P+R. It was very hard work. So I intended to make a booting usb disk. I downed ELCapitan install file "InstallMacOSX.dmg" from apple support.

In terminal window I ordered "sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app."

But " command not found" response was appeared. Does anyone give me answer?

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ELCapitan USB booting command not found problem

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