Can not mount my USB disk-- Ubuntu nor windows[dmesg including]

Question

First, here is my dmesg | tail result right after I plugged the disk in:

 $ dmesg | tail
[ 2578.697224] scsi 6:0:0:0: Direct-Access HP v100w PMAP PQ: 0 ANSI: 0 CCS
[ 2578.698322] sd 6:0:0:0: Attached scsi generic sg2 type 0
[ 2578.916464] sd 6:0:0:0: [sdb] 3921920 512-byte logical blocks: (2.00 GB/1.87 GiB)
[ 2578.916950] sd 6:0:0:0: [sdb] Write Protect is off
[ 2578.916956] sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00
[ 2578.916961] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 2578.922460] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 2578.922470] sdb:
[ 2578.969570] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 2578.969578] sd 6:0:0:0: [sdb] Attached SCSI removable disk

There is nothing after "sdb"...

In the meantime, lsusb shows:

$ lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 004: ID 03f0:3207 Hewlett-Packard
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 002: ID 045e:0737 Microsoft Corp.
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Can anyone help me? What's wrong with my USB disk?

Solution 1

Some USB devices need to be mounted directly, as in

mount /dev/sdb /mnt

(no partition number given). Try it and see what happens.

Solution 2

maybe it is a problem with the udev rules?

lsusb
Bus 002 Device 004: ID 03f0:3207 Hewlett-Packard

Then use that "Bus 002 Device 004" and check what

udevadm info -a -p  $(udevadm info -q path -n /dev/bus/usb/002/004)

And then you find something like this at the top

  looking at device '/devices/pci0000:00/0000:00:1d.7/usb2/2-4':

And that you can put into udevadm to test what happens with the udev rules.

sudo udevadm test /devices/pci0000:00/0000:00:1d.7/usb2/2-4

And look for stuff like

udev_rules_apply_to_event:

And if you need to change them this page is a good start.

• http://raftaman.net/?p=343
• http://www.reactivated.net/writing_udev_rules.html

Solution 3

There is no problem with your drive, at least I can't see anything unusual. The only strange thing, there is no "sdb1" despite the fact that its a pendrive. Try creating a partition with gparted (sudo apt-get install gparted && sudo gparted). .. Last time I ended up spending quite a time with messing my pendrive.

Solution 4

Run

sudo fdisk -l /dev/sdb

Are there any partitions on the disk? Then try mounting a likely one manually. If you don't understand the result, add it to your question above.

View more solutions

Comments

[quack quixote]

DO NOT create a partition table unless you're CERTAIN there's no filesystem present. it will blow away any existing filesystem and data.

[Apache]

Of course it'll, thats common sense.

[quack quixote]

it's common sense if you know it already. please, give explict warnings when you advise dangerous operations -- readers of this site are potentially unsophisticated users and may not understand all the ramifications of following your advice. thanks!

[EthanZ6174]

nope.. at first, this way does not work.... there is no device in gparted

[Aaron Franke]

My drive is /dev/sdd but that command gives mount: no medium found on /dev/sdd.