2 Replies Latest reply: Aug 18, 2014 5:08 AM by Joeri67
candlewax48 Level 1 Level 1



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

Mac OS X (10.7.2)