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Unable to mount USB Flash drive
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  1. #1
    yalgayon Guest

    Unable to mount USB Flash drive

    I try to mount an USB flash drive.
    Wenn I insert the drive a /dev/sdc device is created, but no /dev/sdc1
    I can't mount or use fdisk on /dev/sdc
    The device seems to be recognized, but not completely
    I read the post on mounting usb drives with FC6, but didnt find the solution
    Does anyone have an idea? thanks

    var/log/messages :

    Jul 6 23:25:59 localhost kernel: usb 3-2.1.4: new full speed USB device using ohci_hcd and address 30
    Jul 6 23:25:59 localhost kernel: usb 3-2.1.4: configuration #1 chosen from 1 choice
    Jul 6 23:25:59 localhost kernel: hub 3-2.1.4:1.0: USB hub found
    Jul 6 23:25:59 localhost kernel: hub 3-2.1.4:1.0: 1 port detected
    Jul 6 23:26:00 localhost kernel: usb 3-2.1.4.1: new full speed USB device using ohci_hcd and address 31
    Jul 6 23:26:00 localhost kernel: usb 3-2.1.4.1: configuration #1 chosen from 1 choice
    Jul 6 23:26:00 localhost kernel: scsi14 : SCSI emulation for USB Mass Storage devices
    Jul 6 23:26:05 localhost kernel: scsi scan: INQUIRY result too short (5), using 36
    Jul 6 23:26:05 localhost kernel: scsi 14:0:0:0: Direct-Access USB 2.0 Flash Drive 1.00 PQ: 0 ANSI: 0
    Jul 6 23:26:05 localhost kernel: sd 14:0:0:0: Attached scsi disk sdc
    Jul 6 23:26:05 localhost kernel: sd 14:0:0:0: Attached scsi generic sg4 type 0


    /proc/scsi/usb_storage/14

    Host scsi14: usb-storage
    Vendor: TSE Inc.
    Product: USB Mass Storage Device
    Serial Number: None
    Protocol: Transparent SCSI
    Transport: Bulk
    Quirks:

  2. #2
    Join Date
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    What error do you get when you use the command ' /sbin/fdisk /dev/sdc '
    Is the current partition fat type or ntfs?

    Brian
    Distribution: RHEL 5.1 with Pieces of this and that.
    Kernel 2.6.23.9, KDE 3.5.8 and KDE 4.0 beta, Plus Development src.rpm, ATI fglrx64_7_1_0-8.433-1 rpm with 3D and DRI working.
    Acer 5100-5840 with webcam, ati, sdcard reader, sound, atheros based wireless, all working. Only thing not working is the memory stick reader.

  3. #3
    yalgayon Guest
    I get the message :

    Unable to read /dev/sdc

    I think the filesystem on the key is fat

  4. #4
    yalgayon Guest
    After rebooting the computer, I plug the key again and the mesages in /var/log/messages are different
    instead of using ohci_hcd, the kernel try to use ehci_hcd


    Jul 8 21:30:01 localhost kernel: hub 5-3.1.4:1.0: 1 port detected
    Jul 8 21:30:01 localhost kernel: usb 5-3.1.4.1: new high speed USB device using ehci_hcd and address 8


    I remove the ehcd module with the command rmmod ehci_hcd
    and my key appears on the desktop.

    What is the difference between ehci_hcd and ohci_hcd?


    In var/log/messages :

    Jul 8 21:31:49 localhost kernel: ehci_hcd 0000:00:0b.2: remove, state 1
    Jul 8 21:31:49 localhost kernel: usb usb5: USB disconnect, address 1
    Jul 8 21:31:49 localhost kernel: usb 5-3: USB disconnect, address 2
    Jul 8 21:31:49 localhost kernel: usb 5-3.1: USB disconnect, address 4
    Jul 8 21:31:49 localhost kernel: usb 5-3.1.4: USB disconnect, address 7
    Jul 8 21:31:49 localhost kernel: usb 5-3.1.4.1: USB disconnect, address 8
    Jul 8 21:31:49 localhost kernel: usb 5-3.3: USB disconnect, address 5
    Jul 8 21:31:49 localhost kernel: usb 5-3.4: USB disconnect, address 6
    Jul 8 21:31:49 localhost kernel: ehci_hcd 0000:00:0b.2: dma_pool_destroy ehci_qtd, f7a8a000 busy
    Jul 8 21:31:49 localhost kernel: ehci_hcd 0000:00:0b.2: dma_pool_destroy ehci_qh, f7a89000 busy
    Jul 8 21:31:49 localhost kernel: ehci_hcd 0000:00:0b.2: USB bus 5 deregistered
    Jul 8 21:31:49 localhost kernel: ACPI: PCI interrupt for device 0000:00:0b.2 disabled
    Jul 8 21:31:49 localhost kernel: usb 3-2: new full speed USB device using ohci_hcd and address 2
    Jul 8 21:31:49 localhost kernel: usb 3-2: configuration #1 chosen from 1 choice
    Jul 8 21:31:49 localhost kernel: hub 3-2:1.0: USB hub found
    Jul 8 21:31:49 localhost kernel: hub 3-2:1.0: 4 ports detected
    Jul 8 21:31:49 localhost kernel: usb 3-2.1: new full speed USB device using ohci_hcd and address 3
    Jul 8 21:31:50 localhost kernel: usb 3-2.1: configuration #1 chosen from 1 choice
    Jul 8 21:31:50 localhost kernel: hub 3-2.1:1.0: USB hub found
    Jul 8 21:31:50 localhost kernel: hub 3-2.1:1.0: 4 ports detected
    Jul 8 21:31:50 localhost kernel: usb 3-2.3: new low speed USB device using ohci_hcd and address 4
    Jul 8 21:31:50 localhost kernel: usb 3-2.3: configuration #1 chosen from 1 choice
    Jul 8 21:31:50 localhost kernel: input: USB Optical Mouse USB Optical Mouse as /class/input/input9
    Jul 8 21:31:50 localhost kernel: input: USB HID v1.10 Mouse [USB Optical Mouse USB Optical Mouse] on usb-0000:00:0b.0-2.3
    Jul 8 21:31:50 localhost kernel: usb 3-2.4: new low speed USB device using ohci_hcd and address 5
    Jul 8 21:31:50 localhost kernel: usb 3-2.4: configuration #1 chosen from 1 choice
    Jul 8 21:31:50 localhost kernel: input: SAITEK P220 as /class/input/input10
    Jul 8 21:31:50 localhost kernel: input: USB HID v1.00 Joystick [SAITEK P220] on usb-0000:00:0b.0-2.4
    Jul 8 21:31:50 localhost kernel: usb 3-2.1.4: new full speed USB device using ohci_hcd and address 6
    Jul 8 21:31:51 localhost kernel: usb 3-2.1.4: configuration #1 chosen from 1 choice
    Jul 8 21:31:51 localhost kernel: hub 3-2.1.4:1.0: USB hub found
    Jul 8 21:31:51 localhost kernel: hub 3-2.1.4:1.0: 1 port detected
    Jul 8 21:31:51 localhost kernel: usb 3-2.1.4.1: new full speed USB device using ohci_hcd and address 7
    Jul 8 21:31:51 localhost kernel: usb 3-2.1.4.1: configuration #1 chosen from 1 choice
    Jul 8 21:31:51 localhost kernel: scsi3 : SCSI emulation for USB Mass Storage devices
    Jul 8 21:31:56 localhost kernel: scsi scan: INQUIRY result too short (5), using 36
    Jul 8 21:31:56 localhost kernel: scsi 3:0:0:0: Direct-Access USB 2.0 Flash Drive 1.00 PQ: 0 ANSI: 0
    Jul 8 21:31:56 localhost kernel: SCSI device sdc: 512000 512-byte hdwr sectors (262 MB)
    Jul 8 21:31:56 localhost kernel: sdc: Write Protect is off
    Jul 8 21:31:56 localhost kernel: sdc: assuming drive cache: write through
    Jul 8 21:31:56 localhost kernel: SCSI device sdc: 512000 512-byte hdwr sectors (262 MB)
    Jul 8 21:31:56 localhost kernel: sdc: Write Protect is off
    Jul 8 21:31:56 localhost kernel: sdc: assuming drive cache: write through
    Jul 8 21:31:56 localhost kernel: sdc: sdc1
    Jul 8 21:31:56 localhost kernel: sd 3:0:0:0: Attached scsi disk sdc
    Jul 8 21:31:56 localhost kernel: sd 3:0:0:0: Attached scsi generic sg4 type 0
    Jul 8 21:31:58 localhost hald: mounted /dev/sdc1 on behalf of uid 500

  5. #5
    yalgayon Guest
    I have found a way to always mount my key.

    If the ehci_hcd module is loaded, I plug my key and she doesn't mount.
    I remove the module with 'rmmod ehci_hcd' and my key is automounting.

    After that, if I unplug en plug my key again, she doesn't mount.
    I load the module with 'modprobe ehci_hcd' and my key is automounting again.

    It's a weird behaviour. Is it a bug of the kernel?
    Does someone has a solution to have a more classical behaviour?
    I can each time unload or load the ehci_hcd module, but it's a little boring!

    thanks

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