Featured Articles
Announcing Pi
Technical Specifications
Raspberry Pi FAQs
Win a Pi
Raspberry Pi Wishlist
Actions
Forum Thread Details
  • Replies 10 replies
  • Subscribers 672 subscribers
  • Views 5573 views
  • Users 0 members are here
Related

Unable to mount USB Stick on RPi

mgt6910

I have copied some music files to a USB stick using Linux Mint, (on Mint

it auto-mounted with no problems),and I would

like to mount it on RPi. Details of what I have tried are appended. Any

help would be welcome (I need this sorted by Christmas, or my grandsons won't receive a present !!)

 

As root (sudo bash) on RPi,I inserted the USB Stick:

 

tail -f /var/log/messages

=================================================================

new high-speed USB device number 11 using dwc_otg

new USB device found, idVendor=0781, idProduct=5567

Product: Cruzer Blade

Manufacturer: SanDisk

Serial Number: 20060266511169034397

scsi2 : usb-storage 1-1.1.2.4.4:1.0

scsi 2:0:0:0: Direct-Access  Sandisk Cruzer Blade    1.26 PQ: 0  ANSI: 5

sd 2:0:0:0:  [sda] 62530624 512-byte logical blocks:  (32.0 GB/ 29.8 GiB)

sd 2:0:0:0:  [sda] Write Protect is off

sd 2:0:0:0:  [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA

   sda: sda1

sd 2:0:0:0:  sd 2:0:0:0:  [sda] Attached SCSI removable disk

==================================================================

 

Following instructions found at :

    http://raspi.tv/2012/mount-a-usb-flash-drive-on-raspberry-pi

 

    I entered:

        mkdir /media/my32gb

        mount -t vfat -o rw /dev/sda1 /media/my32gb

 

    which failed with :

        mount: /dev/sda1 is not a valid block device

Parents

  • As you can see from the messages log, your device is being detected and sda1 is seen. The device should then be created automatically for you to mount with the command you used.

     

    can you try the following after the mount command fails

     

    root@raspberry-pi:~# ls -l /dev/sda*

     

    you should get a result something like this:

     

    brw------- 1 root root 8, 0 Dec  6 18:23 /dev/sda

    brw------- 1 root root 8, 1 Dec  6 18:23 /dev/sda1

     

    if instead you get something more like

     

    /bin/ls: cannot access /dev/sda*: No such file or directory

     

    then that would be the problem..

     

    You can investicate further:

     

    root@raspberry-pi:~# cat /proc/partitions

    major minor  #blocks  name

     

    179        0    3872256 mmcblk0

    179        1      97656 mmcblk0p1

    179        2    1833607 mmcblk0p2

    179        3    1940992 mmcblk0p3

       8        0  488386584 sda

       8        1    8388608 sda1

     

    the 8 & 1 here should match the 8, 1 I highlighted in the ls command above.  If they either don't match, or the ls command returned 'No such file or directory' then you can try this

     

    root@raspberry-pi:~# mknod /dev/sda b 8 0

    root@raspberry-pi:~# mknod /dev/sda1 b 8 1

    root@raspberry-pi:~# ls -l /dev/sda*

    brw-r--r-- 1 root root 8, 0 Dec 10 20:33 /dev/sda

    brw-r--r-- 1 root root 8, 1 Dec 10 20:33 /dev/sda1

     

    just be sure to replace the 8 & 1 with whatever's listed in the output of cat /proc/partitions

     

    Then retry the mount command..

     

    Even assuming this all works, try rebooting the Pi and see if you can just remount the usb stick. You may find that the /dev/sda* entries have disappeared and are not being correctly re-created for some reason.

     

    Also, let us know what SD Card iamge and version you're using on the Pi when the problem happens, someone may be able to give you some more directly useful help if we know a little bit more.

Reply

  • As you can see from the messages log, your device is being detected and sda1 is seen. The device should then be created automatically for you to mount with the command you used.

     

    can you try the following after the mount command fails

     

    root@raspberry-pi:~# ls -l /dev/sda*

     

    you should get a result something like this:

     

    brw------- 1 root root 8, 0 Dec  6 18:23 /dev/sda

    brw------- 1 root root 8, 1 Dec  6 18:23 /dev/sda1

     

    if instead you get something more like

     

    /bin/ls: cannot access /dev/sda*: No such file or directory

     

    then that would be the problem..

     

    You can investicate further:

     

    root@raspberry-pi:~# cat /proc/partitions

    major minor  #blocks  name

     

    179        0    3872256 mmcblk0

    179        1      97656 mmcblk0p1

    179        2    1833607 mmcblk0p2

    179        3    1940992 mmcblk0p3

       8        0  488386584 sda

       8        1    8388608 sda1

     

    the 8 & 1 here should match the 8, 1 I highlighted in the ls command above.  If they either don't match, or the ls command returned 'No such file or directory' then you can try this

     

    root@raspberry-pi:~# mknod /dev/sda b 8 0

    root@raspberry-pi:~# mknod /dev/sda1 b 8 1

    root@raspberry-pi:~# ls -l /dev/sda*

    brw-r--r-- 1 root root 8, 0 Dec 10 20:33 /dev/sda

    brw-r--r-- 1 root root 8, 1 Dec 10 20:33 /dev/sda1

     

    just be sure to replace the 8 & 1 with whatever's listed in the output of cat /proc/partitions

     

    Then retry the mount command..

     

    Even assuming this all works, try rebooting the Pi and see if you can just remount the usb stick. You may find that the /dev/sda* entries have disappeared and are not being correctly re-created for some reason.

     

    Also, let us know what SD Card iamge and version you're using on the Pi when the problem happens, someone may be able to give you some more directly useful help if we know a little bit more.

Children
No Data