16120 Views 2 Replies Latest reply: Aug 18, 2014 5:08 AM by Joeri67
I am repeatedly trying to copy usb to usb using the Restore function in disk utility (ie, just copying the whole disk image)
I am also trying to unpack an iso onto a usb
However, each time I try, i get 1 of 2 error messages:
"could not validate source - invalid argument"
and "could not validate source - error 254"
any ideas ? thankyou