Getting rid of /dev and mount entry after unplugging mounted USB memory stick

Sat Nov 12 18:56:53 GMT 2005

Hi list,

Every now and then I forget to unmount my USB memory stick. This becomes a 
problem because every time I do it, I am left with a bogus mount and 
device entry. "umount -f" makes the whole machine reboot instantly. From 
the googling that I have done, I have concluded that this is normal. (But 
just to be sure, I will paste my dmesg output below).

Is there a way I can get rid of the bogus mount / device entry other than 
rebooting, or will I really have to teach myself to unmount my USB device 
everytime before I unplug it?

Note that integrity of the data or data-transfer speed of the USB device 
is not critical as it is actually an MP3 player that I copy a bunch of 
mp3s to every now and then. So sacrifices can be made if neccesary.

Below is the dmesg output of all USB-related devices (da0 through da3 are 
flashcard readers, haven't actually done anything with those so they can 
probably be ignored). Output from plugging in the mp3player is at the bottom.

ohci0: <OHCI (generic) USB controller> mem 0xc9003000-0xc9003fff irq 21 at 
device 2.0 on pci0
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 10 ports with 10 removable, self powered
ehci0: <EHCI (generic) USB 2.0 controller> mem 0xfeb00000-0xfeb000ff irq 
22 at device 2.1 on pci0
ehci0: [GIANT-LOCKED]
usb1: EHCI version 1.0
usb1: companion controller, 4 ports each: usb0
usb1: <EHCI (generic) USB 2.0 controller> on ehci0
usb1: USB revision 2.0
uhub1: nVidia EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub1: 10 ports with 10 removable, self powered
uhub2: vendor 0x03eb Standard USB Hub, class 9/0, rev 1.10/3.00, addr 2
uhub2: 4 ports with 4 removable, self powered
umass0: ICSI IC1100 V2.5b, rev 1.10/2.5b, addr 3
ums0: Logitech USB-PS/2 Optical Mouse, rev 2.00/21.00, addr 4, iclass 3/1
ums0: 7 buttons and Z dir.
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <ICSI IC1100        CF 2.5b> Removable Direct Access SCSI-0 device
da0: 1.000MB/s transfers
da0: Attempt to query device size failed: NOT READY, Medium not present
da1 at umass-sim0 bus 0 target 0 lun 1
da1: <ICSI IC1100        MS 2.5b> Removable Direct Access SCSI-0 device
da1: 1.000MB/s transfers
da1: Attempt to query device size failed: NOT READY, Medium not present
da2 at umass-sim0 bus 0 target 0 lun 2
da2: <ICSI IC1100    MMC/SD 2.5b> Removable Direct Access SCSI-0 device
da2: 1.000MB/s transfers
da2: Attempt to query device size failed: NOT READY, Medium not present
da3 at umass-sim0 bus 0 target 0 lun 3
da3: <ICSI IC1100        SM 2.5b> Removable Direct Access SCSI-0 device
da3: 1.000MB/s transfers
da3: Attempt to query device size failed: NOT READY, Medium not present
(da0:umass-sim0:0:0:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0
(da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
(da0:umass-sim0:0:0:0): SCSI Status: Check Condition
(da0:umass-sim0:0:0:0): NOT READY asc:3a,0
(da0:umass-sim0:0:0:0): Medium not present
(da0:umass-sim0:0:0:0): Unretryable error
Opened disk da0 -> 6
(da0:umass-sim0:0:0:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0
(da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
(da0:umass-sim0:0:0:0): SCSI Status: Check Condition
(da0:umass-sim0:0:0:0): NOT READY asc:3a,0
(da0:umass-sim0:0:0:0): Medium not present
(da0:umass-sim0:0:0:0): Unretryable error
Opened disk da0 -> 6
(da0:umass-sim0:0:0:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0
(da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
(da0:umass-sim0:0:0:0): SCSI Status: Check Condition
(da0:umass-sim0:0:0:0): NOT READY asc:3a,0
(da0:umass-sim0:0:0:0): Medium not present
(da0:umass-sim0:0:0:0): Unretryable error
Opened disk da0 -> 6
(da1:umass-sim0:0:0:1): READ CAPACITY. CDB: 25 20 0 0 0 0 0 0 0 0
(da1:umass-sim0:0:0:1): CAM Status: SCSI Status Error
(da1:umass-sim0:0:0:1): SCSI Status: Check Condition
(da1:umass-sim0:0:0:1): NOT READY asc:3a,0
(da1:umass-sim0:0:0:1): Medium not present
(da1:umass-sim0:0:0:1): Unretryable error
Opened disk da1 -> 6
(da1:umass-sim0:0:0:1): READ CAPACITY. CDB: 25 20 0 0 0 0 0 0 0 0
(da1:umass-sim0:0:0:1): CAM Status: SCSI Status Error
(da1:umass-sim0:0:0:1): SCSI Status: Check Condition
(da1:umass-sim0:0:0:1): NOT READY asc:3a,0
(da1:umass-sim0:0:0:1): Medium not present
(da1:umass-sim0:0:0:1): Unretryable error
Opened disk da1 -> 6
(da1:umass-sim0:0:0:1): READ CAPACITY. CDB: 25 20 0 0 0 0 0 0 0 0
(da1:umass-sim0:0:0:1): CAM Status: SCSI Status Error
(da1:umass-sim0:0:0:1): SCSI Status: Check Condition
(da1:umass-sim0:0:0:1): NOT READY asc:3a,0
(da1:umass-sim0:0:0:1): Medium not present
(da1:umass-sim0:0:0:1): Unretryable error
Opened disk da1 -> 6
(da2:umass-sim0:0:0:2): READ CAPACITY. CDB: 25 40 0 0 0 0 0 0 0 0
(da2:umass-sim0:0:0:2): CAM Status: SCSI Status Error
(da2:umass-sim0:0:0:2): SCSI Status: Check Condition
(da2:umass-sim0:0:0:2): NOT READY asc:3a,0
(da2:umass-sim0:0:0:2): Medium not present
(da2:umass-sim0:0:0:2): Unretryable error
Opened disk da2 -> 6
(da2:umass-sim0:0:0:2): READ CAPACITY. CDB: 25 40 0 0 0 0 0 0 0 0
(da2:umass-sim0:0:0:2): CAM Status: SCSI Status Error
(da2:umass-sim0:0:0:2): SCSI Status: Check Condition
(da2:umass-sim0:0:0:2): NOT READY asc:3a,0
(da2:umass-sim0:0:0:2): Medium not present
(da2:umass-sim0:0:0:2): Unretryable error
Opened disk da2 -> 6
(da2:umass-sim0:0:0:2): READ CAPACITY. CDB: 25 40 0 0 0 0 0 0 0 0
(da2:umass-sim0:0:0:2): CAM Status: SCSI Status Error
(da2:umass-sim0:0:0:2): SCSI Status: Check Condition
(da2:umass-sim0:0:0:2): NOT READY asc:3a,0
(da2:umass-sim0:0:0:2): Medium not present
(da2:umass-sim0:0:0:2): Unretryable error
Opened disk da2 -> 6
(da3:umass-sim0:0:0:3): READ CAPACITY. CDB: 25 60 0 0 0 0 0 0 0 0
(da3:umass-sim0:0:0:3): CAM Status: SCSI Status Error
(da3:umass-sim0:0:0:3): SCSI Status: Check Condition
(da3:umass-sim0:0:0:3): NOT READY asc:3a,0
(da3:umass-sim0:0:0:3): Medium not present
(da3:umass-sim0:0:0:3): Unretryable error
Opened disk da3 -> 6
(da3:umass-sim0:0:0:3): READ CAPACITY. CDB: 25 60 0 0 0 0 0 0 0 0
(da3:umass-sim0:0:0:3): CAM Status: SCSI Status Error
(da3:umass-sim0:0:0:3): SCSI Status: Check Condition
(da3:umass-sim0:0:0:3): NOT READY asc:3a,0
(da3:umass-sim0:0:0:3): Medium not present
(da3:umass-sim0:0:0:3): Unretryable error
Opened disk da3 -> 6
(da3:umass-sim0:0:0:3): READ CAPACITY. CDB: 25 60 0 0 0 0 0 0 0 0
(da3:umass-sim0:0:0:3): CAM Status: SCSI Status Error
(da3:umass-sim0:0:0:3): SCSI Status: Check Condition
(da3:umass-sim0:0:0:3): NOT READY asc:3a,0
(da3:umass-sim0:0:0:3): Medium not present
(da3:umass-sim0:0:0:3): Unretryable error
Opened disk da3 -> 6

umass1: Packard Bell Portable MP3 Player, rev 1.10/10.01, addr 5
da4 at umass-sim1 bus 1 target 0 lun 0
da4: <Packard Portable Player 0100> Removable Direct Access SCSI-4 device
da4: 1.000MB/s transfers
da4: 122MB (250368 512 byte sectors: 64H 32S/T 122C)