How can a usb be detected but not show up anywhere?
- by George Mauer
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?
