Unable to mount USB Flash memory created on CentOS

James B. Byrne byrnejb at harte-lyne.ca
Fri Jul 28 18:48:38 UTC 2017

On Fri, July 28, 2017 13:22, James B. Byrne wrote:
> On my new FreeBSD workstation I am trying to read data off of a USB
> 'key' flash memory stick recorded using rsync on a CentOS-6 system.  I
> was able to do this successfully up until the point that I inserted
> another usb stick.  Now I cannot mount or read either.
> I probably made things worse by first removing both keys from the host
> and then deleting the contents of /media.  However, that is done.
> At the moment what happens is that upon insertion the 'computer'
> browser pane will display a filesystem labelled 'USB Drive' but I
> cannot open it for viewing.  Neither does a mount command show in the
> right-click popup menu.
> Rebooting the system does not return the system to its former
> behaviour.
> How is this fixed?  Is it not possible to have two USB drives mounted
> simulatenously?
This is what I see in dmesg:

ugen3.2: <Kingston> at usbus3
umass0: <Kingston DataTraveler 2.0, class 0/0, rev 2.00/1.00, addr 2>
on usbus3
umass0:  SCSI over Bulk-Only; quirks = 0x8100
umass0:5:0: Attached to scbus5
da0 at umass-sim0 bus 0 scbus5 target 0 lun 0
da0: <Kingston DataTraveler 2.0 PMAP> Removable Direct Access SPC-2
SCSI device
da0: Serial Number 50E549C20210BF10A9BC4174
da0: 40.000MB/s transfers
da0: 60017MB (122915328 512 byte sectors)
da0: quirks=0x3<NO_SYNC_CACHE,NO_6_BYTE>
ugen3.2: <Kingston> at usbus3 (disconnected)
umass0: at uhub3, port 6, addr 2 (disconnected)
da0 at umass-sim0 bus 0 scbus5 target 0 lun 0
da0: <Kingston DataTraveler 2.0 PMAP> s/n 50E549C20210BF10A9BC4174
(da0:umass-sim0:0:0:0): Periph destroyed

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James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited          http://www.harte-lyne.ca
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