From owner-freebsd-questions@FreeBSD.ORG Sat Aug 27 23:28:01 2011 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 083A81065673 for ; Sat, 27 Aug 2011 23:28:01 +0000 (UTC) (envelope-from brett@lariat.net) Received: from lariat.net (lariat.net [66.119.58.2]) by mx1.freebsd.org (Postfix) with ESMTP id 7FC5A8FC14 for ; Sat, 27 Aug 2011 23:28:00 +0000 (UTC) Received: from WildRover.lariat.net (IDENT:ppp1000.lariat.net@lariat.net [66.119.58.2]) by lariat.net (8.9.3/8.9.3) with ESMTP id RAA02327 for ; Sat, 27 Aug 2011 17:01:32 -0600 (MDT) Message-Id: <201108272301.RAA02327@lariat.net> X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Sat, 27 Aug 2011 17:01:24 -0600 To: questions@freebsd.org From: Brett Glass Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Cc: Subject: System hanging, error messages with USB drive on FreeBSD 8.1 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Aug 2011 23:28:01 -0000 I'm working with a FreeBSD 8.1-RELEASE/amd64 machine that's attempting to write data to an ordinary Kingston 8 GB microSD card. The card has been inserted into its USB adapter and plugged into a USB port on the machine. The system is locking up repeatedly with messages that say (da1:umass-sim1:1:0:0): SYNCHRONIZE CACHE(10). CDB: 35 0 0 0 0 0 0 0 0 0 (da1:umass-sim1:1:0:0): SCSI sense: Error code 0x52 A Web search reveals that problems like this have cropped up for many, many FreeBSD users as far back as 4.x. But I can't seem to find any solution (which amazes me; if there's a bug, one would think it would have gotten some attention). Do I have to abandon the use of FreeBSD with USB thumb drives (or maybe with USB altogether)? Hope not, but I may have to if I can't get this fixed. --Brett Glass