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Which is faster: copying from mounted AOMEI image or from external HD via USB 2?

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4wd:
You didn't say whether the mounted image is on the same internal drive as the copying destination.  If it is then the constant head seeking of the drive is going to slow things down a lot and you'd be better off copying from the external USB drive.

f0dder:
USB2 has a 60MB a second limit -- but the problem is it often only reaches ~30 maximum -- will depend on your external drive and file sizes-tomos (September 22, 2015, 08:39 AM)
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The raw USB2 link has a 480Mbit/s theoretical limit, yes, but because of protocol overhead you'll never ever reach that - and the (kind of) people who saw it fit to use the theoretical link limit as advertisement should be dragged out back and done with.

Theoretically one should be able to reach about 35MB/s of "interesting" bandwidth, but it's usually in the 25MB/s ballpark.

dr_andus:
You didn't say whether the mounted image is on the same internal drive as the copying destination.  If it is then the constant head seeking of the drive is going to slow things down a lot and you'd be better off copying from the external USB drive.
-4wd (September 22, 2015, 05:09 PM)
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Indeed, that was the case. Thanks for the explanation!

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