How can a usb be detected but not show up anywhere?

Posted by George Mauer on Ask Ubuntu See other posts from Ask Ubuntu or by George Mauer
Published on 2012-04-04T20:04:10Z Indexed on 2012/09/27 21:51 UTC
Read the original article Hit count: 314

Filed under:
|

I started the morning by trying to create a bootable usb using a 2gb stick and the startup disk creator. It seemed to run through the whole process just fine until it got to a screen that read something like "Creating memory partion" and which sat on 100% for about 45 minutes before I hit cancel and removed the usb stick.

Now the usb stick is not being detected as storage or...anything (even on my windows pc) though it does show up in the syslog.

Allow me to demonstrate. We start with the usb not plugged in:

[georgemauer@ubuntu:~]$ sudo fdisk -l                                     (04-04 16:01)

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x994bdc0f

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048    27650047    13824000   27  Hidden NTFS WinRE
/dev/sda2   *    27650048    27854847      102400    7  HPFS/NTFS/exFAT
/dev/sda3        27854848   976771119   474458136    7  HPFS/NTFS/exFAT

I plug in the usb:

[georgemauer@ubuntu:~]$ tail -f /var/log/syslog         
                       ***Snip***

Apr  4 15:01:18 ubuntu wpa_supplicant[1136]: WPA: Group rekeying completed with 00:24:36:ad:e7:3f [GTK=TKIP]
Apr  4 15:02:29  wpa_supplicant[1136]: last message repeated 3 times
Apr  4 15:02:29 ubuntu kernel: [22122.788133] usb 2-1: new high speed USB device number 13 using ehci_hcd
Apr  4 15:02:29 ubuntu kernel: [22122.923873] scsi10 : usb-storage 2-1:1.0
Apr  4 15:02:29 ubuntu mtp-probe: checking bus 2, device 13: "/sys/devices/pci0000:00/0000:00:13.2/usb2/2-1"
Apr  4 15:02:30 ubuntu mtp-probe: bus: 2, device: 13 was not an MTP device
Apr  4 15:02:30 ubuntu kernel: [22123.926154] scsi 10:0:0:0: Direct-Access     GENERIC  USB Mass Storage 1.00 PQ: 0 ANSI: 2
Apr  4 15:02:30 ubuntu kernel: [22124.105118] sd 10:0:0:0: Attached scsi generic sg1 type 0
Apr  4 15:02:30 ubuntu kernel: [22124.108212] sd 10:0:0:0: [sdb] Attached SCSI removable disk

but then:

[georgemauer@ubuntu:~]$ ls /mnt -alF                                      (04-04 16:02)
total 8
drwxr-xr-x  2 root root 4096 2011-04-21 12:51 ./
drwxr-xr-x 26 root root 4096 2012-03-31 13:16 ../
[georgemauer@ubuntu:~]$ ls /media -alF                                    (04-04 16:03)
total 8
drwxr-xr-x  2 root root 4096 2012-04-04 12:18 ./
drwxr-xr-x 26 root root 4096 2012-03-31 13:16 ../

What could be going on and how do I recover my usb key?

© Ask Ubuntu or respective owner

Related posts about mount

  • 12.10 update breaks NFS mount

    as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
    I've just upgraded to the latest 12.10 beta. Rebooted twice. The problem is with the NFS folders not mounting, here's a verbose log. # mount -v myserver:/nfs_shared/tools /tools/ mount: no type was given - I'll assume nfs because of the colon mount.nfs: timeout set for Mon Oct 1 11:42:28 2012 mount… >>> More

  • Mount SMB / AFP 13.10

    as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
    I cannot seem to get Ubuntu to mount a mac share via SMB or AFP. I've tried the following... AFP: apt-get install afpfs-ng-utils mount_afp afp://user:password@localip/share /mnt/share Error given: "Could not connect, never got a reponse to getstatus, Connection timed out". Which is odd as I can… >>> More

  • Mount Return Code for CIFS mount

    as seen on Server Fault - Search for 'Server Fault'
    When I run the following command (as root or via sudo) from a bash script I get an exit status (or return code in mount man page parlance) of 1: mount -v -t cifs //nasbox/volume /tmpdir/ --verbose -o credentials=/root/cifsid & /tmp/mylog It outputs the following into the myflog file: parsing… >>> More

  • Disable raid member check upon mount to mount damaged nvidia raid1 member

    as seen on Server Fault - Search for 'Server Fault'
    Hi, A friend of mine destroyed his Nvidia RAID1 array somehow and in trying to fix it, he ended up with a non-working array. Because of the RAID metadata, the actual disk data was stored at an offset from the beginning. I was able to identify this offset with dd and a hexeditor and then I used losetup… >>> More

  • Network shares do not mount.

    as seen on Super User - Search for 'Super User'
    My network shares were mounting fine yesterday.. suddenly they are not. They were mounting fine for the last two weeks or however long since I added them. When I run sudo mount -a I get the following error: topsy@monolyth:~$ sudo mount -a mount error(12): Cannot allocate memory Refer to the mount… >>> More

Related posts about usb-drive