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Date: Fri, 1 Jun 2012 10:42:53 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Jens Schweikhardt <schweikh@schweikhardt.net>
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	Fri, 01 Jun 2012 10:42:53 +0200 (CEST)
Cc: questions@freebsd.org
Subject: Re: How to use an external USB3.0 drive with 4k sectors?
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> # mount -t ntfs -o ro /dev/da5s1  /mnt
> mount_ntfs: /dev/da5s1: Invalid argument
> )
your dmesg shows drive is properly detected.

seems like ntfs driver doesn't work OR MBR is't properly handled.