removable usb media don't present devices to mount

Ryan Zeigler zeiglerr at dickinson.edu
Thu Oct 20 16:49:22 PDT 2005


On Thursday 20 October 2005 04:29 pm, you wrote:
> Ryan Zeigler wrote:
> >I'm using FreeBSD 6.0-rc1, and I'm having trouble with removable usb
> > memory drives.  I plug the device in, and get this from dmesg:
> >
> >umass0: LEXAR MEDIA JUMPDRIVE2, rev 2.00/1.25, addr 2
> >
> >There is no mention at all of /dev/da0, which is, as I understand it, the
> >device that is traditionally presented to mount.  usbdevs sees the device,
> >and gives this output.
> >
> >port 8 addr 2: high speed, power 70 mA, config 1, JUMPDRIVE2(0xa300),
> > LEXAR MEDIA(0x05dc), rev 1.25
> >
> >This occurs both with GENERIC kernels, and a custom kernel that I
> > configured. The custom configuration is listed here:
> >http://www.dickinson.edu/~zeiglerr/STRMKERNEL
> >
> >Other things of interest.  At random intervals, unplugging the device and
> >replugging it gives me this out of dmesg:
> >
> >umass0: LEXAR MEDIA JUMPDRIVE2, rev 2.00/1.25, addr 2
> >da0 at umass-sim0 bus 0 target 0 lun 0
> >da0: <Generic STORAGE DEVICE 1.25> Removable Direct Access SCSI-0 device
> >da0: 40.000MB/s transfers
> >da0: 250MB (512000 512 byte sectors: 64H 32S/T 250C)
> >(da0:umass-sim0:0:0:0): Synchronize cache failed, status == 0x10, scsi
> > status == 0x0
> >
> >However, the mount command hangs in this case (I left it, and came back an
> >hour later and it hadn't mounted).
> >
> >The USB drive works, as it is autodetected and mounted by Mac's and
> > various other USB memory drives are not properly recognized either.
> >
> >On a whim, I booted into a FreeSBIE live CD that I have, and it was
> >automounted and functioned correctly.
> >
> >One last little bit of interest, booting hangs immediately before
> > attempting to mount / if I boot with the device plugged in.  Booting
> > continues normally when I unplug the device.  I am not sure if this is
> > significant.
> >
> >I would appreciate any help that could be offered.  Thanks.
>
> How are you mounting the drive?  Here is what works for me:
> mount_msdosfs /dev/da0s1 /mnt
>
> Rem

Same type error.  I do not have /dev/da0s1 either.  Also, on a whim, I tried 
mknod /dev/da0.  That didn't work.
-- 
Ryan Zeigler
Dickinson '08


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