Date: Wed, 19 Oct 2016 03:44:19 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: doug <doug@fledge.watson.org> Cc: freebsd-questions@freebsd.org Subject: Re: Can not mount USB device Message-ID: <20161019032445.K6806@sola.nimnet.asn.au> In-Reply-To: <mailman.91.1476792002.89621.freebsd-questions@freebsd.org> References: <mailman.91.1476792002.89621.freebsd-questions@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
In freebsd-questions Digest, Vol 646, Issue 2, Message: 14 On Mon, 17 Oct 2016 16:25:36 -0400 (EDT) doug <doug@fledge.watson.org> 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20161019032445.K6806>