USB device changes automatically as read only

[Osmo Laitinen]

After a USB device is attached, it is mounted automatically, but at some point it is changed as read-only file system.

Here is /var/log/messages:

Feb 28 16:57:29 rock kernel: [ 4592.265031] usb 4-2: new full speed USB device using uhci_hcd and address 2
Feb 28 16:57:33 rock kernel: [ 4595.573130] usb 4-2: configuration #1 chosen from 1 choice
Feb 28 16:57:33 rock kernel: [ 4595.649655] Initializing USB Mass Storage driver...
Feb 28 16:57:33 rock kernel: [ 4595.649849] scsi2 : SCSI emulation for USB Mass Storage devices
Feb 28 16:57:33 rock kernel: [ 4595.650051] usbcore: registered new interface driver usb-storage
Feb 28 16:57:33 rock kernel: [ 4595.650059] USB Mass Storage support registered.
Feb 28 16:57:38 rock kernel: [ 4600.657035] scsi 2:0:0:0: Direct-Access TrekStor i.Beat cebrax FM 0100 PQ: 0 ANSI: 4
Feb 28 16:57:38 rock kernel: [ 4600.658096] sd 2:0:0:0: Attached scsi generic sg2 type 0
Feb 28 16:57:38 rock kernel: [ 4600.708107] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
Feb 28 16:57:38 rock kernel: [ 4600.723948] sd 2:0:0:0: [sdb] Write Protect is off
Feb 28 16:57:38 rock kernel: [ 4600.733071] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
Feb 28 16:57:38 rock kernel: [ 4600.736174] sdb: sdb1
Feb 28 16:57:38 rock kernel: [ 4600.758997] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
Feb 28 16:57:38 rock kernel: [ 4600.761985] sd 2:0:0:0: [sdb] Attached SCSI removable disk
Feb 28 17:00:48 rock kernel: [ 4791.113830] usb 4-2: reset full speed USB device using uhci_hcd and address 2
Feb 28 17:00:59 rock kernel: [ 4801.380028] usb 4-2: reset full speed USB device using uhci_hcd and address 2
Feb 28 17:01:04 rock kernel: [ 4806.649040] usb 4-2: reset full speed USB device using uhci_hcd and address 2
Feb 28 17:01:14 rock kernel: [ 4817.224069] usb 4-2: reset full speed USB device using uhci_hcd and address 2
Feb 28 17:01:25 rock kernel: [ 4827.784041] usb 4-2: reset full speed USB device using uhci_hcd and address 2
Feb 28 17:01:30 rock kernel: [ 4833.304037] usb 4-2: reset full speed USB device using uhci_hcd and address 2
Feb 28 17:01:36 rock kernel: [ 4838.712048] sd 2:0:0:0: Device offlined - not ready after error recovery
Feb 28 17:01:36 rock kernel: [ 4838.713649] usb 4-2: USB disconnect, address 2
Feb 28 17:01:37 rock kernel: [ 4839.633038] usb 4-2: new full speed USB device using uhci_hcd and address 4
Feb 28 17:01:40 rock kernel: [ 4842.998033] usb 4-2: configuration #1 chosen from 1 choice
Feb 28 17:01:40 rock kernel: [ 4843.010652] scsi3 : SCSI emulation for USB Mass Storage devices
Feb 28 17:01:45 rock kernel: [ 4848.028897] scsi 3:0:0:0: Direct-Access TrekStor i.Beat cebrax FM 0100 PQ: 0 ANSI: 4
Feb 28 17:01:45 rock kernel: [ 4848.029878] sd 3:0:0:0: Attached scsi generic sg2 type 0
Feb 28 17:01:45 rock kernel: [ 4848.042104] sd 3:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
Feb 28 17:01:45 rock kernel: [ 4848.064116] sd 3:0:0:0: [sdb] Write Protect is off
Feb 28 17:01:45 rock kernel: [ 4848.120109] sd 3:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
Feb 28 17:01:45 rock kernel: [ 4848.131652] sdb: sdb1
Feb 28 17:01:45 rock kernel: [ 4848.153885] sd 3:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
Feb 28 17:01:45 rock kernel: [ 4848.169213] sd 3:0:0:0: [sdb] Attached SCSI removable disk

and dmesg:

[ 4592.265031] usb 4-2: new full speed USB device using uhci_hcd and address 2
[ 4595.573130] usb 4-2: configuration #1 chosen from 1 choice
[ 4595.649655] Initializing USB Mass Storage driver...
[ 4595.649849] scsi2 : SCSI emulation for USB Mass Storage devices
[ 4595.650051] usbcore: registered new interface driver usb-storage
[ 4595.650059] USB Mass Storage support registered.
[ 4595.650303] usb-storage: device found at 2
[ 4595.650309] usb-storage: waiting for device to settle before scanning
[ 4600.652067] usb-storage: device scan complete
[ 4600.657035] scsi 2:0:0:0: Direct-Access TrekStor i.Beat cebrax FM 0100 PQ: 0 ANSI: 4
[ 4600.658096] sd 2:0:0:0: Attached scsi generic sg2 type 0
[ 4600.708107] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[ 4600.723948] sd 2:0:0:0: [sdb] Write Protect is off
[ 4600.723958] sd 2:0:0:0: [sdb] Mode Sense: 3e 00 00 00
[ 4600.723964] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 4600.733071] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[ 4600.736139] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 4600.736174] sdb: sdb1
[ 4600.758997] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[ 4600.761976] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 4600.761985] sd 2:0:0:0: [sdb] Attached SCSI removable disk
[ 4665.164369] FAT: Filesystem error (dev sdb1)
[ 4665.164376] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.164382] File system has been set read-only
[ 4665.164388] FAT: Filesystem error (dev sdb1)
[ 4665.164391] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.164398] FAT: Filesystem error (dev sdb1)
[ 4665.164401] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.164409] FAT: Filesystem error (dev sdb1)
[ 4665.164411] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.164418] FAT: Filesystem error (dev sdb1)
[ 4665.164420] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.165104] FAT: Filesystem error (dev sdb1)
[ 4665.165113] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.165124] FAT: Filesystem error (dev sdb1)
[ 4665.165128] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.165248] FAT: Filesystem error (dev sdb1)
[ 4665.165252] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.165263] FAT: Filesystem error (dev sdb1)
[ 4665.165267] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.258566] FAT: Filesystem error (dev sdb1)
[ 4665.258572] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4665.258581] FAT: Filesystem error (dev sdb1)
[ 4665.258583] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4774.584935] FAT: Filesystem error (dev sdb1)
[ 4774.584945] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4774.584956] FAT: Filesystem error (dev sdb1)
[ 4774.584960] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4774.585907] FAT: Filesystem error (dev sdb1)
[ 4774.585916] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4774.585928] FAT: Filesystem error (dev sdb1)
[ 4774.585932] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4774.586060] FAT: Filesystem error (dev sdb1)
[ 4774.586066] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4774.586076] FAT: Filesystem error (dev sdb1)
[ 4774.586080] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4774.588979] FAT: Filesystem error (dev sdb1)
[ 4774.588989] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4774.589047] FAT: Filesystem error (dev sdb1)
[ 4774.589051] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4791.113830] usb 4-2: reset full speed USB device using uhci_hcd and address 2
[ 4801.380028] usb 4-2: reset full speed USB device using uhci_hcd and address 2
[ 4806.649040] usb 4-2: reset full speed USB device using uhci_hcd and address 2
[ 4811.768036] usb 4-2: device descriptor read/64, error -71
[ 4816.992184] usb 4-2: device descriptor read/64, error -71
[ 4817.224069] usb 4-2: reset full speed USB device using uhci_hcd and address 2
[ 4822.344026] usb 4-2: device descriptor read/64, error -71
[ 4827.568031] usb 4-2: device descriptor read/64, error -71
[ 4827.784041] usb 4-2: reset full speed USB device using uhci_hcd and address 2
[ 4833.192040] usb 4-2: device not accepting address 2, error -71
[ 4833.304037] usb 4-2: reset full speed USB device using uhci_hcd and address 2
[ 4838.712018] usb 4-2: device not accepting address 2, error -71
[ 4838.712048] sd 2:0:0:0: Device offlined - not ready after error recovery
[ 4838.713649] usb 4-2: USB disconnect, address 2
[ 4838.769096] hub 4-0:1.0: unable to enumerate USB device on port 2
[ 4839.633038] usb 4-2: new full speed USB device using uhci_hcd and address 4
[ 4842.998033] usb 4-2: configuration #1 chosen from 1 choice
[ 4843.010652] scsi3 : SCSI emulation for USB Mass Storage devices
[ 4843.010953] usb-storage: device found at 4
[ 4843.010958] usb-storage: waiting for device to settle before scanning
[ 4848.021503] usb-storage: device scan complete
[ 4848.028897] scsi 3:0:0:0: Direct-Access TrekStor i.Beat cebrax FM 0100 PQ: 0 ANSI: 4
[ 4848.029878] sd 3:0:0:0: Attached scsi generic sg2 type 0
[ 4848.042104] sd 3:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[ 4848.064116] sd 3:0:0:0: [sdb] Write Protect is off
[ 4848.064125] sd 3:0:0:0: [sdb] Mode Sense: 3e 00 00 00
[ 4848.064131] sd 3:0:0:0: [sdb] Assuming drive cache: write through
[ 4848.120109] sd 3:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[ 4848.131641] sd 3:0:0:0: [sdb] Assuming drive cache: write through
[ 4848.131652] sdb: sdb1
[ 4848.153885] sd 3:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[ 4848.169199] sd 3:0:0:0: [sdb] Assuming drive cache: write through
[ 4848.169213] sd 3:0:0:0: [sdb] Attached SCSI removable disk
[ 4889.124788] FAT: Filesystem error (dev sdb1)
[ 4889.124796] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.124804] File system has been set read-only
[ 4889.124888] FAT: Filesystem error (dev sdb1)
[ 4889.124892] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.124977] FAT: Filesystem error (dev sdb1)
[ 4889.124981] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.125096] FAT: Filesystem error (dev sdb1)
[ 4889.125100] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.125185] FAT: Filesystem error (dev sdb1)
[ 4889.125189] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.126108] FAT: Filesystem error (dev sdb1)
[ 4889.126115] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.126201] FAT: Filesystem error (dev sdb1)
[ 4889.126205] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.126391] FAT: Filesystem error (dev sdb1)
[ 4889.126396] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.126481] FAT: Filesystem error (dev sdb1)
[ 4889.126485] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.571423] FAT: Filesystem error (dev sdb1)
[ 4889.571429] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4889.571474] FAT: Filesystem error (dev sdb1)
[ 4889.571477] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 4920.921245] FAT: Filesystem error (dev sdb1)
[ 4920.921253] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4920.921265] FAT: Filesystem error (dev sdb1)
[ 4920.921269] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4920.921279] FAT: Filesystem error (dev sdb1)
[ 4920.921283] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4920.921293] FAT: Filesystem error (dev sdb1)
[ 4920.921297] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4920.921306] FAT: Filesystem error (dev sdb1)
[ 4920.921310] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4920.921969] FAT: Filesystem error (dev sdb1)
[ 4920.921975] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4920.921983] FAT: Filesystem error (dev sdb1)
[ 4920.921986] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4920.922076] FAT: Filesystem error (dev sdb1)
[ 4920.922079] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4920.922085] FAT: Filesystem error (dev sdb1)
[ 4920.922088] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4921.347025] FAT: Filesystem error (dev sdb1)
[ 4921.347032] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 4921.347040] FAT: Filesystem error (dev sdb1)
[ 4921.347043] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 5442.462046] FAT: Filesystem error (dev sdb1)
[ 5442.462056] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 5442.462144] FAT: Filesystem error (dev sdb1)
[ 5442.462149] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 5442.463160] FAT: Filesystem error (dev sdb1)
[ 5442.463172] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 5442.463259] FAT: Filesystem error (dev sdb1)
[ 5442.463264] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 5442.463514] FAT: Filesystem error (dev sdb1)
[ 5442.463520] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 5442.463611] FAT: Filesystem error (dev sdb1)
[ 5442.463616] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 5442.469092] FAT: Filesystem error (dev sdb1)
[ 5442.469100] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 5442.469185] FAT: Filesystem error (dev sdb1)
[ 5442.469189] fat_get_cluster: invalid cluster chain (i_pos 60450730)
[ 5443.749790] FAT: Filesystem error (dev sdb1)
[ 5443.749798] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 5443.749806] FAT: Filesystem error (dev sdb1)
[ 5443.749809] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 5443.750283] FAT: Filesystem error (dev sdb1)
[ 5443.750288] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 5443.750295] FAT: Filesystem error (dev sdb1)
[ 5443.750298] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 5443.750374] FAT: Filesystem error (dev sdb1)
[ 5443.750377] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 5443.750384] FAT: Filesystem error (dev sdb1)
[ 5443.750386] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 5443.752652] FAT: Filesystem error (dev sdb1)
[ 5443.752656] fat_bmap_cluster: request beyond EOF (i_pos 47251481)
[ 5443.752664] FAT: Filesystem error (dev sdb1)
[ 5443.752666] fat_bmap_cluster: request beyond EOF (i_pos 47251481)

this is how mount sees it:
/dev/sdb1 on /media/cebrax FM type vfat (rw,nosuid,nodev,uhelper=devkit,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,flush)

I tried to unmount it with gnome/nautilus which failed, but it remounted itself again. And changed to read-only quite soon again.

ProblemType: Bug
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ossi 2618 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'ICH5'/'Intel ICH5 with ALC650F at irq 17'
   Mixer name : 'Realtek ALC650F'
   Components : 'AC97a:414c4723'
   Controls : 50
   Simple ctrls : 33
Date: Sun Feb 28 17:10:24 2010
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=d221331e-cf8c-4ae7-898e-2fd5eeab9ca8
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
Package: linux-image-2.6.31-19-generic 2.6.31-19.56
ProcCmdLine: root=UUID=6487f68f-677f-4261-8d5a-8bd97832ca55 ro quiet splash
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-19.56-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-19-generic N/A
 linux-firmware 1.26
RfKill:

SourcePackage: linux
Uname: Linux 2.6.31-19-generic i686
WpaSupplicantLog:

dmi.bios.date: 11/04/2003
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: IS7/IS7-G/IS7-E(Intel i865-ICH5)
dmi.board.vendor: http://www.abit.com.tw/
dmi.board.version: 1.0
dmi.chassis.type: 3
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd11/04/2003:svn:pn:pvr:rvnhttp//www.abit.com.tw/:rnIS7/IS7-G/IS7-E(Inteli865-ICH5):rvr1.0:cvn:ct3:cvr:

[Osmo Laitinen (osmo-laitinen)]

This oldish bug is probably related: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/35054

[Osmo Laitinen (osmo-laitinen)]

I had finally time to check this a bit and looks like reason was few broken files.

I ran fsck which noticed a few broken files.
Then I ran fsck with autorepair for that device/mp3-player and problems seems to be
vanished.

So, I suggest that gui tool should do this automagically (with some confirmation) behind scenes.

[Jeremy Foshee (jeremyfoshee)]

Hi Osmo,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Osmo Laitinen (osmo-laitinen)]

I managed to get that mp3 player's file system in bad shape by copying and removing data from and to it and unplugging it during the process. Not the same way it was, though.

It also breaks with 2.6.34-999-generic #201005051005

dmesg:

[ 112.036017] usb 4-1: new full speed USB device using uhci_hcd and address 2
[ 115.402367] Initializing USB Mass Storage driver...
[ 115.403019] scsi2 : usb-storage 4-1:1.0
[ 115.403443] usbcore: registered new interface driver usb-storage
[ 115.403449] USB Mass Storage support registered.
[ 116.404685] scsi 2:0:0:0: Direct-Access TrekStor i.Beat cebrax FM 0100 PQ: 0 ANSI: 4
[ 116.405486] sd 2:0:0:0: Attached scsi generic sg2 type 0
[ 116.414376] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[ 116.417728] sd 2:0:0:0: [sdb] Write Protect is off
[ 116.417737] sd 2:0:0:0: [sdb] Mode Sense: 3e 00 00 00
[ 116.417742] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 116.428650] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[ 116.431645] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 116.431654] sdb: sdb1
[ 116.444688] sd 2:0:0:0: [sdb] 1001088 2048-byte logical blocks: (2.05 GB/1.90 GiB)
[ 116.448190] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 116.448202] sd 2:0:0:0: [sdb] Attached SCSI removable disk
[ 123.639221] FAT: Filesystem error (dev sdb1)
[ 123.639228] invalid access to FAT (entry 0x49d8e209)
[ 123.639234] File system has been set read-only

[Osmo Laitinen (osmo-laitinen)]

And fsck.vfat -v -n /dev/sdb1:

dosfsck 3.0.3 (18 May 2009)
dosfsck 3.0.3, 18 May 2009, FAT32, LFN
Checking we can access the last sector of the filesystem
There are differences between boot sector and its backup.
Differences: (offset:original/backup)
  0:eb/42, 1:3e/12, 2:90/00, 3:4d/49, 4:53/02, 5:57/07, 6:49/01, 7:4e/06
  , 8:34/00, 9:2e/06, 10:31/01, 12:08/00, 13:02/00, 14:20/00, 16:02/00
  , 21:f8/88, 24:30/20, 26:ed/20, 28:30/00, 32:50/40, 33:46/04, 34:0f/03
  , 36:37/05, 37:0f/01, 44:02/00, 50:06/04, 64:80/00, 66:29/01, 82:46/00
  , 83:41/01, 84:54/14, 85:33/03, 86:32/00, 87:20/00, 88:20/00, 89:20/00
  Not automatically fixing this.
Boot sector contents:
System ID "MSWIN4.1"
Media byte 0xf8 (hard disk)
      2048 bytes per logical sector
      4096 bytes per cluster
        32 reserved sectors
First FAT starts at byte 65536 (sector 32)
         2 FATs, 32 bit entries
   7976960 bytes per FAT (= 3895 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 16019456 (sector 7822)
    496609 data clusters (2034110464 bytes)
48 sectors/track, 237 heads
        48 hidden sectors
   1001040 sectors total
FATs differ but appear to be intact. Using first FAT.
/Wild Beasts
  Has a large number of bad entries. (105/128)
  Not dropping it in auto-mode.
/Wild Beasts/<A2>Y%-A<E2>\212'.<DD>[\017
  Bad file name.
  ---- (lots of simlar stuff)
  Renamed to 065\0000000.\000\033f
/Wild Beasts
  "." is missing. Can't fix this yet.
/Wild Beasts
  ".." is missing. Can't fix this yet.
/Wild Beasts/<D6>\034\017{*q\010<F2>.<E3><E9>\224
  Start cluster beyond limit (746417343 > 496610). Truncating file.
--- (lots of similar stuff)
Checking for unused clusters.
Reclaimed 3473 unused clusters (14225408 bytes).
Checking free cluster summary.
Free cluster summary wrong (250662 vs. really 254135)
  Auto-correcting.
Leaving file system unchanged.
/dev/sdb1: 397 files, 242474/496609 clusters

[Osmo Laitinen (osmo-laitinen)]

In this latter case some files of usb seems to be in quite bad shape, so maybe manual run of fsck is really needed.

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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