I have a bootable USB for OSX El Capitan that I got from a friend. I need to make a copy of that on my USB. How do I clone that or make it into an ISO and clone the ISO into my USB in Mac?
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It would seem any disk cloning software should work, whether Clonezilla, Acronis or other. See techsupportalert.com/best-free-drive-cloning-software.htm for some more. – DrMoishe Pippik Oct 4 '15 at 23:42
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Recommendations for Mac might be more helpful ;-) Super Duper or Carbon Copy Cloner are the usual suspects. Acronis does now make a Mac version, but I'm not very experienced with it - see macworld.com/article/2461362/… for a review of the others – Tetsujin Oct 5 '15 at 9:40
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You should be able to use Disk Utility included with your Mac. Connect both USB drives to your Mac. Then do the following.
- Click on the Restore tab
- Drag the source USB drive over to where it says Source
- Drag the destination USB drive over to where it says Destination
- Click the Restore button
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You can use the standard UNIX utility dd
plug in the flash drive you want to clone
open terminal (Apple Key + space or Apple Key + f, whichever brings up the search box [I forgot] and type terminal, then hit enter)
type
dmesg | tail -n 10
that's a pipe not an L (usually on the backslash key)
hit enter. check what drive showed up. I'll use sd2 for my example (could be ada1, or sda1, etc)
sudo dd if=/dev/sd2 of=usb.img bs=4096
then unplug the flash drive when it's finished. plug in the blank one.
sudo dd if=usb.img of=/dev/sd2 bs=4096
to image the blank USB flash drive. It's good practice to verify that the second USB drive was assigned the same device name. Likely it was.
