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Date:      Wed, 19 Oct 2016 10:18:28 +0300
From:      Boris Samorodov <bsam@passap.ru>
To:        freebsd-questions@freebsd.org
Subject:   Re: Can not mount USB device
Message-ID:  <ebe1cdc5-4449-69e9-16e4-38b4d846fa41@passap.ru>
In-Reply-To: <7da0b7b1-79f2-6f74-8149-d2b768a98280@passap.ru>
References:  <alpine.BSF.2.20.1610161606090.78426@fledge.watson.org> <5c038e43-820d-4cf8-69d7-c9e7cfde2c39@passap.ru> <alpine.BSF.2.20.1610181128390.74981@fledge.watson.org> <7da0b7b1-79f2-6f74-8149-d2b768a98280@passap.ru>

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19.10.2016 10:10, Boris Samorodov пишет:
> 18.10.2016 18:53, doug пишет:
>> On Tue, 18 Oct 2016, Boris Samorodov wrote:
>>
>>> 17.10.2016 23:25, doug ?????:
>>>> 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)?
>>>
>> Good suggestion. So I tried:
>>
>> ------plug in device-------
>> Oct 18 11:44:27 hermes kernel: ugen1.2: <Generic> at usbus1
>> Oct 18 11:44:27 hermes kernel: umass0: <Generic Mass Storage, class 0/0,
>> rev 2.00/1.06, addr 2> on usbus1
>> Oct 18 11:44:27 hermes kernel: umass0:  SCSI over Bulk-Only; quirks =
>> 0x4101
>> Oct 18 11:44:27 hermes kernel: umass0:2:0:-1: Attached to scbus2
>> Oct 18 11:44:27 hermes kernel: da0 at umass-sim0 bus 0 scbus2 target 0
>> lun 0
>> Oct 18 11:44:27 hermes kernel: da0: <Generic Flash Disk 8.07> Removable
>> Direct Access SPC-2 SCSI device
>> Oct 18 11:44:27 hermes kernel: da0: Serial Number 2942AC6E
>> Oct 18 11:44:27 hermes kernel: da0: 40.000MB/s transfers
>> Oct 18 11:44:27 hermes kernel: da0: 425MB (870400 512 byte sectors)
>> Oct 18 11:44:27 hermes kernel: da0: quirks=0x2<NO_6_BYTE>
>> -----------mount -t msdosfs -o -m=444,-M=444 /dev/da0s1 /mnt/ ----------
> 
> I'd try to mount it at read-only mode (-o -m=444,-M=444,ro).

Ah, I see that you've already succeeded with this command. Great.
(The thread was splitted, and I did not notice it before answering.)

>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): WRITE(10). CDB:
>> 2a 00 00 00 20 26 00 00 08 00
>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): CAM status: SCSI
>> Status Error
>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): SCSI status:
>> Check Condition
>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): SCSI sense: DATA
>> PROTECT asc:27,0 (Write protected)
>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): Error 13,
>> Unretryable error
>> Oct 18 11:45:08 hermes kernel: g_vfs_done():da0s1[WRITE(offset=19456,
>> length=4096)]error = 13
>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): WRITE(10). CDB:
>> 2a 00 00 00 20 26 00 00 08 00
>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): CAM status: SCSI
>> Status Error
>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): SCSI status:
>> Check Condition
>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): SCSI sense: DATA
>> PROTECT asc:27,0 (Write protected)
>> Oct 18 11:45:08 hermes kernel: (da0:umass-sim0:0:0:0): Error 13,
>> Unretryable error
>> Oct 18 11:45:08 hermes kernel: g_vfs_done():da0s1[WRITE(offset=19456,
>> length=4096)]error = 13
>> -------------end of log---------
>>
>> So either there is another way to address a read-only usb or this is a
>> new wrinkle, I guess. All of this was done as root by necessity as I
>> have never bothered with all the steps to allow user mounts as this is
>> my laptop.
> 

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



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