advice about copy from disk to disk

Dan Nelson dnelson at
Wed May 28 08:46:43 PDT 2003

In the last episode (May 28), Joseph Gleason said:
> I usually get better transfer rates with bs=16k or so.
> What transfer rate do you get?  If they are modern drives (which 80gb
> implies) you should get about 20-30MB/s.  At that rate it should take
> a little over an hour to transfer.
> To see the transfer start the dd, let it run for maybe 10-15 sec and
> give it a Ctrl+c.  It should print out its transfer rate thus far.

Ctrl-T will send SIGINFO, which will make dd print its throughput
without aborting.

	Dan Nelson
	dnelson at

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