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Date:      Fri, 13 Mar 2009 14:21:40 +0100
From:      Polytropon <freebsd@edvax.de>
To:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   SanDisk USB stick with FreeBSD 7
Message-ID:  <20090313142140.88c76082.freebsd@edvax.de>

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Hi,

I've gotten an USB stick with 8 GB which doesn not
work with FreeBSD 7-STABLE-20080811. I've googled
and found that this particular product might be
"defective by factory".

Anyone has an idea how to make it accessible with
FreeBSD?

In order to have maximal abilities for data transfer,
this stick is msdosfs formatted. But no proper
device will occur if plugged in.

Some data here:

umass0: <SanDisk Cruzer Micro, class 0/0, rev 2.00/2.00, addr 2> on uhub3
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <SanDisk Cruzer Micro 8.02> Removable Direct Access SCSI-0 device 
da0: 1.000MB/s transfers
da0: Attempt to query device size failed: UNIT ATTENTION, Medium not present
umass0: at uhub3 port 1 (addr 2) disconnected
(da0:umass-sim0:0:0:0): lost device
(da0:umass-sim0:0:0:0): removing device entry
umass0: detached

There is only /dev/da0.

% fdisk da0
******* Working on device /dev/da0 *******
parameters extracted from in-core disklabel are:
cylinders=977 heads=255 sectors/track=63 (16065 blks/cyl)

parameters to be used for BIOS calculations are:
cylinders=977 heads=255 sectors/track=63 (16065 blks/cyl)

Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 11 (0x0b),(DOS or Windows 95 with 32 bit FAT)
    start 44, size 15679396 (7655 Meg), flag 0
        beg: cyl 0/ head 0/ sector 45;
        end: cyl 975/ head 254/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>

Sothe partition data can be read, why is there no
device file to access the partition? because of the
line "da0: Attempt to query device size failed:
UNIT ATTENTION, Medium not present" I think it's not
possible to get rid of this problem by reformatting
the stick.

I think about returning it to the vendor with a
hardcopy of dmesg which reveals that the stick is
defect. :-)


Thanks for any recommendations.




-- 
Polytropon
>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...



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