From owner-freebsd-current@FreeBSD.ORG Sat Nov 2 16:12:09 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 40BE2B23; Sat, 2 Nov 2013 16:12:09 +0000 (UTC) (envelope-from feld@FreeBSD.org) Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 11DB92C22; Sat, 2 Nov 2013 16:12:08 +0000 (UTC) Received: from compute3.internal (compute3.nyi.mail.srv.osa [10.202.2.43]) by gateway1.nyi.mail.srv.osa (Postfix) with ESMTP id E79F022173; Sat, 2 Nov 2013 12:12:07 -0400 (EDT) Received: from frontend2 ([10.202.2.161]) by compute3.internal (MEProxy); Sat, 02 Nov 2013 12:12:07 -0400 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=content-type:mime-version:subject:from :in-reply-to:date:cc:content-transfer-encoding:message-id :references:to; s=smtpout; bh=LSGsy9G/yJZrEIGB4JTtrV23H1E=; b=eP wRjr3WJOrgMICIKCdy9JER1Zt1U4PNduIHFOS2Ed6s/jjUmzl6wzoHSSBZ7iMwtR 7rrYFbdoU2mkCNno0PpL3wZq96Wjf8hi3gh6Ij3VoZloKg2a8+NY+vuurmmTt34Q KLhNmaLGq5jhcouIesV0tSELpcC+gDB9fcvrDDCsE= X-Sasl-enc: yq/vJxdXNqOaZN7Ur3LcW9D5s2pWlRsbnDBQdHLBxpvQ 1383408727 Received: from [172.16.1.145] (unknown [68.117.126.78]) by mail.messagingengine.com (Postfix) with ESMTPA id 674F368017C; Sat, 2 Nov 2013 12:12:07 -0400 (EDT) Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Mac OS X Mail 7.0 \(1811\)) Subject: Re: Overriding sector size on disks? From: Mark Felder In-Reply-To: Date: Sat, 2 Nov 2013 11:12:06 -0500 Content-Transfer-Encoding: quoted-printable Message-Id: References: To: Adrian Chadd X-Mailer: Apple Mail (2.1811) Cc: freebsd-current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Nov 2013 16:12:09 -0000 On Nov 1, 2013, at 9:45 PM, Adrian Chadd wrote: > Hi! >=20 > I have an odd problem. That, honestly, can't be that odd. >=20 > I have a bunch of SATA disks that when plugged into the laptop > directly, show up as 512 byte sectors. But if I plug it in via this > iomega USB caddy, they show up as 4k sector devices. >=20 > Because of this, partitions just plainly don't work. >=20 > Has anyone faced this? Is there some trick to do to get these things > to go back to being 512 byte sector devices so one can use them? >=20 > Similarly, because they show up as 512 byte sector devices on > macosx/linux, they can read/write NTFS/MSDOS partitions on the thing. > But if I plug it into freebsd, it shows up as a 4k sector device and > things plainly don't work. >=20 > Thanks! >=20 >=20 My coworker ran into this once. We couldn=92t find a workaround. We just = noted that we either had to use the disk with the adapter or without =97 = you cannot swap between and expect to read your data.=