Duplicate a bootable USB drive?

[luomat]

1) If I have a USB stick which has been designed to be bootable, and I want to backup said USB stick onto another USB stick, can I use SuperDuper and end up with another bootable USB stick?

Any special instructions that I ought to know about?


2) Same question, but assume I want to back the USB stick up to a DMG or ISO or whatever. Can I use SD! or do I need a different program?

[dnanian]

1) You just have to make sure the other stick is also properly partitioned for the Mac (as GUID, given it's USB). Otherwise, treat as normal.

2) You can certainly make a sparse image file from it, as you can with any other. ISO, no.