• Ensure the USB Key is properly formatted (Master Boot Record, FAT32 - if necessary NTFS using ) • You can try using the Restore feature in Disk Utility by clicking on the USB key's volume, then clicking on the Restore tab and choosing the ISO to restore onto it. • If step 2 fails, you can do this manually by running ditto or cp -r; eg. Ditto /Volumes/NAME_OF_MOUNTED_ISO /Volumes/NAME_OF_USB_KEY or cp -r /Volumes/NAME_OF_MOUNTED_ISO /Volumes/NAME_OF_USB_KEY to manually copy all the files (including hidden ones).

With a bootable Ubuntu USB stick, you can: Install or upgrade Ubuntu, even on a Mac. Test out the Ubuntu desktop experience without touching your PC configuration. Creating a bootable USB stick is very simple, especially if you're going to use the USB stick with a generic Windows or Linux PC. Usb wireless n for mac.