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Nov 21, 2015 at 23:21 comment added Rod Smith First, be 100% sure that /dev/rdisk2 is the proper device. With that done, try using the same sudo dd... command you used immediately, but substitute if=/dev/zero for the .dmg file you used in the first place. This won't make the disk immediately useable, but it should make it possible for Disk Utility to make it useable.
Nov 21, 2015 at 18:28 review First posts
Nov 22, 2015 at 5:21
Nov 21, 2015 at 18:18 history asked Anonymous CC BY-SA 3.0