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#1 2012-10-15 14:11:41

senior_spielbergo
Member
Registered: 2011-02-21
Posts: 29

Can not mount USB devices

A week a ago I noticed that I can not mount any USB devices on my laptop and my desktop computer. Both machines where running the Kernel 3.5.6. Important to mention is that my mouse and my keyboard where recognized fine, but any other USB device like USB sticks and my scanner where not recognized.

After I updated to Kernel 3.6.2 [typo before 1.6.2] today I am able to acces my SanDisk Cruzer USB stick with fat32 filesystem on both machines. I am able read the contents but I can not read from it. My other USB stick (LaCie, Ltd iamaKey V2 - also with fat32) is recognized but I am unable to mount it. Also my scanner is recognized but I can not access it.

I am not sure if I might miss something when running the updates. Any help on this is really appreciated because this bug starts annoying me. ;-)

Last edited by senior_spielbergo (2012-10-15 14:27:52)

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#2 2012-10-15 14:21:39

karol
Archivist
Registered: 2009-05-06
Posts: 25,440

Re: Can not mount USB devices

senior_spielbergo wrote:

After I updated to Kernel 1.6.2 today

I think you mean the 3.6.2 version :-)

Reboot and try again.

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#3 2012-10-15 14:26:50

senior_spielbergo
Member
Registered: 2011-02-21
Posts: 29

Re: Can not mount USB devices

Hey you are right I mean 3.6.2 ;-)

I already rebooted because I noticed a couple of kernels earlier that you need to in order to use USB device. But thanks for this hint :-)

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#4 2012-10-15 14:33:48

karol
Archivist
Registered: 2009-05-06
Posts: 25,440

Re: Can not mount USB devices

Can you give more info, what commands did you use, what was the exact error etc.

senior_spielbergo wrote:

my SanDisk Cruzer USB stick with fat32 filesystem on both machines. I am able read the contents but I can not read from it.

senior_spielbergo wrote:

My other USB stick (LaCie, Ltd iamaKey V2 - also with fat32) is recognized but I am unable to mount it.

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#5 2012-10-15 17:18:19

senior_spielbergo
Member
Registered: 2011-02-21
Posts: 29

Re: Can not mount USB devices

Hey, thanks for the reply. I fixed most of the problems myself now. Now I can use my scanner again and mount both USB sticks (the filesystem on the LaCie, Ltd iamaKey V2 was corrupted).

But I still can not write on the USB sticks. Does anybody know what could be the problem. Another thing I noticed is that the USB drives are not mounted automatically anymore. Maybe this is linked with the other problem.
Thanks for any hints on this :-)

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#6 2012-10-15 17:35:03

karol
Archivist
Registered: 2009-05-06
Posts: 25,440

Re: Can not mount USB devices

I've already hinted that you should provide more info :-)

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#7 2012-10-15 18:16:05

senior_spielbergo
Member
Registered: 2011-02-21
Posts: 29

Re: Can not mount USB devices

Since I have no idea what could cause this error I can only provide the commands I try to run in the terminal to check for the error. Normally I just use the automount option which comes with gnome but does not work anymore.

First I created a folder "/media/usb"

sudo mkdir /media/usb

Then I used the mount command to mount the USB stick. This works fine and I can access the stick.

sudo mount /dev/sdf /media/usb

I can copy data from the stick, but I can not copy, move or delete any data to/from it. Even if I try this as a root it does not work.

cp test /media/usb
cp: cannot create regular file ‘/media/usb/test’: Read-only file system

sudo cp test /media/usb
[sudo] password for david: 
cp: cannot create regular file ‘/media/usb/test’: Read-only file system

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#8 2012-10-15 18:17:36

karol
Archivist
Registered: 2009-05-06
Posts: 25,440

Re: Can not mount USB devices

Please post the output of 'mount | column -t' with the stick mounted.

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#9 2012-10-15 18:29:55

senior_spielbergo
Member
Registered: 2011-02-21
Posts: 29

Re: Can not mount USB devices

Ok, I see that it is only mounted read-only...

/dev/sdf          on  /media/usb                  type  udf                    (ro,relatime,utf8)

...so I tried to find out how to mount it with read-write access and ended up with:

sudo mount /dev/sdf /media/usb -o rw

The result is the same though. It is still mounted with read-only access.

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#10 2012-10-15 18:32:58

karol
Archivist
Registered: 2009-05-06
Posts: 25,440

Re: Can not mount USB devices

It says 'type  udf' and not fat32. Any idea why?

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#11 2012-10-15 18:36:01

senior_spielbergo
Member
Registered: 2011-02-21
Posts: 29

Re: Can not mount USB devices

Hmm, that is very strange since fdisk prints this:

sudo fdisk -l /dev/sdf

Disk /dev/sdf: 8065 MB, 8065646080 bytes, 15753215 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: 0x000d3685

   Device Boot      Start         End      Blocks   Id  System
/dev/sdf1   *        2048    15751167     7874560    b  W95 FAT32

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