MacOS – Copying ISO file to USB drive in OS X

isomacosunixusb

I have tried to copy an ISO file to a USB drive. I am unable to do it with Disk Utility. How can I copy the ISO file to a USB drive?

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But I get the below. I have enough space in the 16GB USB drive for the 2GB ISO file. What am I doing wrong?

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Debugging

Bmike commented "You can isolate the scanning of the image from the restoring to see if the problem lies with the image or the copy. Images -> Scan Image for Restore… from the menu of Disk Utility." but the procedure fires the error below. What does it mean?

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Best Answer

From http://www.youtube.com/watch?v=fu2g_E2ZK8A:

Screen shot from video

You can also can try this. It works for me. This is a rather "raw" copy and will typically not work for a bootable USB, but will work for other cases.

Here is a transcription of the commands from the screen shot for your copy/paste pleasure.

diskutil list                                            # shows disks
hdiutil convert -format UDRW -o destino.img origen.iso   # convert to dmg
sudo dd if=destino.img.dmg of=/dev/rdisk1 bs=1m          # copy to USB on rdisk1
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