What are your SD card specs? What are the specs of he HD you're writing to? USB 2.0 maxes out at 60MB/s but real world is around 35MB/s. 3000/35 = 86 seconds. So the hour is way off. But depending on what your machine is doing at the same time, historically shitty time estimates for the "blue bar", etc I'm guessing it was faster than an hour in the end?
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