Unable to mount USB Flash memory created on CentOS

[Valeri Galtsev]

On Fri, July 28, 2017 4:16 pm, James B. Byrne via freebsd-questions wrote:
>
> On Fri, July 28, 2017 17:09, James B. Byrne wrote:
>> # mount -t ext2fs -o ro /dev/da0s1 /mnt/usb01
>> # mount -t ext2fs -o ro /dev/da1s1 /mnt/usb02
>>
>> These both work on the second and third usb stick, the ones whose
>> insertion seemed to trigger the problem.
>>
>> This is the backup stick which was already inserted and mounted when
>> the problem started:
>>
>> # gpart list da0
>> Geom name: da0
>> modified: false
>> state: OK
>> fwheads: 255
>> fwsectors: 63
>> last: 122915327
>> first: 63
>> entries: 4
>> scheme: MBR
>> Providers:
>> 1. Name: da0s1
>>    Mediasize: 62928519168 (59G)
>>    Sectorsize: 512
>>    Stripesize: 0
>>    Stripeoffset: 4128768
>>    Mode: r0w0e0
>>    attrib: active
>>    rawtype: 12
>>    length: 62928519168
>>    offset: 4128768
>>    type: !12
>>    index: 1
>>    end: 122915327
>>    start: 8064
>> Consumers:
>> 1. Name: da0
>>    Mediasize: 62932647936 (59G)
>>    Sectorsize: 512
>>    Mode: r0w0e0
>>
>>
>> So what is type !12?  How would I mount it?
>>
>>
>
> fstyp /dev/da0s1
> msdosfs
>
> But that does not seem right.  This usb stick was filled using rsync.

rsync does not change filesystem type, only files and directories. It will
fail to make appropriate permissions and ownership if filesystem on
destination does not support those. I often use rsync on my FreeBSD to
dump some stuff onto USB flash drive (with msdosdf) from native UFS
formatted partition on the machine, and then I mount flash drive on MS
Windows which happily does it, even though it has no idea about UFS which
files originally came from.

I hope this helps.

Valeri

>
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++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++