From owner-freebsd-questions@freebsd.org Tue Oct 18 17:12:09 2016 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 462B1C170DA for ; Tue, 18 Oct 2016 17:12:09 +0000 (UTC) (envelope-from doug@fledge.watson.org) Received: from cyrus.watson.org (cyrus.watson.org [198.74.231.69]) by mx1.freebsd.org (Postfix) with ESMTP id 2551BC0B for ; Tue, 18 Oct 2016 17:12:09 +0000 (UTC) (envelope-from doug@fledge.watson.org) Received: from fledge.watson.org (fledge.watson.org [198.74.231.63]) by cyrus.watson.org (Postfix) with ESMTPS id 1E14146B7F for ; Tue, 18 Oct 2016 13:12:03 -0400 (EDT) Received: from fledge.watson.org (doug@localhost.watson.org [127.0.0.1]) by fledge.watson.org (8.15.2/8.15.2) with ESMTP id u9IHC28E061999 for ; Tue, 18 Oct 2016 13:12:02 -0400 (EDT) (envelope-from doug@fledge.watson.org) Received: from localhost (doug@localhost) by fledge.watson.org (8.15.2/8.15.2/Submit) with ESMTP id u9IHC2KO061996 for ; Tue, 18 Oct 2016 13:12:02 -0400 (EDT) (envelope-from doug@fledge.watson.org) Date: Tue, 18 Oct 2016 13:12:02 -0400 (EDT) From: doug@fledge.watson.org To: freebsd-questions@freebsd.org Subject: Re: Can not mount USB device In-Reply-To: <20161019032445.K6806@sola.nimnet.asn.au> Message-ID: References: <20161019032445.K6806@sola.nimnet.asn.au> User-Agent: Alpine 2.20 (BSF 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (fledge.watson.org [127.0.0.1]); Tue, 18 Oct 2016 13:12:02 -0400 (EDT) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Oct 2016 17:12:09 -0000 On Wed, 19 Oct 2016, Ian Smith wrote: > In freebsd-questions Digest, Vol 646, Issue 2, Message: 14 > On Mon, 17 Oct 2016 16:25:36 -0400 (EDT) doug wrote: > > > The system is FreeBSD 10.3-RELEASE-p7 #0. All commands are execured as root. > > > > file -s /dev/da0s1 > > /dev/da0s1: DOS/MBR boot sector, code offset 0x58+2, OEM-ID "MSDOS5.0", > > sectors/cluster 8, reserved sectors 38, Media descriptor 0xf8, sectors/track 63, > > heads 16, hidden sectors 8192, sectors 831488 (volumes > 32 MB) , FAT (32 bit), > > sectors/FAT 813, serial number 0x482393a9, unlabeled > > > > I ended up with the following attempts > > > > mount -t msdosfs -o -m=644 /dev/da0s1 /mnt/ > > 5mount_msdosfs: /dev/da0s1: Permission denied > > > > dmesg: > > (da0:umass-sim0:0:0:0): Error 13, Unretryable error > > g_vfs_done():da0s1[WRITE(offset=19456, length=4096)]error = 13 > > (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 00 00 00 20 26 00 00 08 00 > > (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error > > (da0:umass-sim0:0:0:0): SCSI status: Check Condition > > (da0:umass-sim0:0:0:0): SCSI sense: DATA PROTECT asc:27,0 (Write protected) > > Looks like it either has a write-protect switch, as some do, or it came > write protected, ie is designed to be read-only, as apparently some are. > > > mount -t msdosfs -o -m=644,-M=644 /dev/da0s1 /mnt/ > > mount_msdosfs: /dev/da0s1: Permission denied > > > > dmesg: > > (da0:umass-sim0:0:0:0): Error 13, Unretryable error > > g_vfs_done():da0s1[WRITE(offset=19456, length=4096)]error = 13 > > > > All other variations got the same error (Permission denied) > > > > The USB stick is readable in windows 10. I thought it was a data disk it turns > > out to have 2 install program files one for windows and one for mac. > > So try mounting it read-only. As root, you don't need to mess with the > permissions either, so just this should work: > > # mount -t msdosfs -r /dev/da0s1 /mnt # alternatively '-o ro' > > cheers, Ian Bingo - thank you, I guess I should have got that out of 'man' but that ship had sailed