umass device produces errors /var/log/messages

[David Southwell]

Some help would be appreciated:

[root at dns1 /var/run]# camcontrol devlist
<USB2.0 CF  CardReader >           at scbus0 target 0 lun 0 (pass0,da0)
<USB2.0 CBO CardReader >           at scbus0 target 0 lun 1 (pass1,da1)
-----------------------------------------------------------
From /var/log/messages:
Apr 18 03:27:03 dns1 kernel: Opened disk da1 -> 6
Apr 18 03:27:05 dns1 kernel: (da0:umass-sim0:0:0:0): READ CAPACITY. CDB: 25 0 
0 0 0 0 0 0 0 0 
Apr 18 03:27:05 dns1 kernel: (da0:umass-sim0:0:0:0): CAM Status: SCSI Status 
Error
Apr 18 03:27:05 dns1 kernel: (da0:umass-sim0:0:0:0): SCSI Status: Check 
Condition
Apr 18 03:27:05 dns1 kernel: (da0:umass-sim0:0:0:0): NOT READY asc:3a,0
Apr 18 03:27:05 dns1 kernel: (da0:umass-sim0:0:0:0): Medium not present
Apr 18 03:27:05 dns1 kernel: (da0:umass-sim0:0:0:0): Unretryable error
Apr 18 03:27:05 dns1 kernel: Opened disk da0 -> 6
Apr 18 03:27:05 dns1 kernel: (da1:umass-sim0:0:0:1): READ CAPACITY. CDB: 25 20 
0 0 0 0 0 0 0 0 
Apr 18 03:27:05 dns1 kernel: (da1:umass-sim0:0:0:1): CAM Status: SCSI Status 
Error
Apr 18 03:27:05 dns1 kernel: (da1:umass-sim0:0:0:1): SCSI Status: Check 
Condition
Apr 18 03:27:05 dns1 kernel: (da1:umass-sim0:0:0:1): NOT READY asc:3a,0
Apr 18 03:27:05 dns1 kernel: (da1:umass-sim0:0:0:1): Medium not present
Apr 18 03:27:05 dns1 kernel: (da1:umass-sim0:0:0:1): Unretryable error
Apr 18 03:27:05 dns1 kernel: Opened disk da1 -> 6

Would anyone be kind enought to tell me how I stop the repeated error messages 
and have the device set-up to use?

Thanks in advance

Thanks in advance

David