Q: The copy of the installer app failed.
I'm trying to create a USB bootable with Yosemite, but the process doesn't complete.
I launched the command from terminal as explained here
/Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/YOSEMITE/ --applicationpath /Applications/Install\ OS\ X\ Yosemite.app
and I got the following output:
Ready to start.
To continue we need to erase the disk at /Volumes/YOSEMITE/.
If you wish to continue type (Y) then press return: Y
Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
The copy of the installer app failed.
Everything goes fine until almost the end. It seems the USB volume is unmounted abruptly because it disappears from the desktop and I got the message asking to eject it before removing it. After that, I get the error that the copy of the installer fails.
I'm running OS X 10.10.1, I downloaded the Yosemite Image from App Store.
Thanks in advance for any suggestion.
Mac Pro, OS X Yosemite (10.10.1)
Posted on Apr 5, 2015 4:14 AM
You can make a bootable USB stick to install using this free program which will do all the work for you.
Posted on Apr 5, 2015 1:58 PM