Can not mount USB device

[Boris Samorodov]

17.10.2016 23:25, doug пишет:
> 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)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

> 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.

Do you try to mount read/write while it's only readable (write
protected)?

-- 
WBR, Boris Samorodov (bsam)
FreeBSD Committer, http://www.FreeBSD.org The Power To Serve