USB disks on FreeBSD 4.7

JacobRhoden jrhoden at
Mon Nov 24 14:33:28 PST 2003

On Mon, 24 Nov 2003 02:56 pm, Mike Jeays wrote:
> I have a  4.7 system, and have trouble with an Apacer Flash Memory
> 64 MB disk.  I can read and write the FAT system on it if it is
> plugged in at boot time, but I cannot remount it if I unmount
> it, unplug it, and then plug it in again.

> da0 at umass-sim0 bus 0 target 0 lun 0
> da0: < USB DISK 2.08> Removable Direct Access SCSI-0 device
> da0: 650KB/s transfers
> da0: 62MB (128000 512 byte sectors: 64H 32S/T 62C)
> (da0:umass-sim0:0:0:0): READ(6)/WRITE(6) not supported, increasing
> minimum_cmd_size to 10.

I have looked up what I type to control my USB card reader, here are the 
commands i use:

  camcontrol devlist    -- shows you what devices are attached
  camcontrol eject      -- type this if you want to detach your device
                                     or if you want to stop the cf card and
                                     put a new one in
  camcontrol start      -- after inserting a new cf card, do this to
                                     make it mountable

Make sure you umount your device before you do the camcontro eject or you 
might loose some data.

JacobRhoden --

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