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Date: Sat, 31 Dec 2016 10:01:09 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: swjatoslaw gerus <milstar2@eml.cc>
cc: freebsd-questions@freebsd.org
Subject: Re: Fwd: Re: Fwd: system -invalid argument 1m   #### dd
 if=FreeBSD-11-RELEASE-amd64-memstick.img of=/dev/sdb1 bs=1M  conv=sync
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On Fri, 30 Dec 2016, swjatoslaw gerus wrote:

> this questions was answered before
>
> for linux   not 1m ,but  1048576 without suffiks

Well, the suffix can be skipped, but it also works if you follow the 
strict capitalization need by Linux dd ("1M", not "1m").

> that work file is sended to /dev/sdb1

Sure, that image can be written to a partition. But it will work from a 
partition, because it is a whole disk image.