Linux FAT12 mount issue (digital media problem)

Dear all,

I have a problem with mounting the SD cards formatted on the digital
camera on my Linux BOX. But I am able to mount and access the same
devices on WinXP.

I think someone might have faced the same problem. Did u find some
solution to this? Please convey if any.

When I have tried to find the fs type SD card formatted in camera.
I found it to be FAT12. Does the linux kernel have the support for FAT12
fs?
I suppose it does. But, why am I not able to mount the device.

Regards,
Mukund jampala

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Re: Linux FAT12 mount issue (digital media problem)

Mukund JB. wrote:
> Dear all,
>
> I have a problem with mounting the SD cards formatted on the digital
> camera on my Linux BOX. But I am able to mount and access the same
> devices on WinXP.
>
> I think someone might have faced the same problem. Did u find some
> solution to this? Please convey if any.
>
> When I have tried to find the fs type SD card formatted in camera.
> I found it to be FAT12. Does the linux kernel have the support for FAT12
> fs?
> I suppose it does. But, why am I not able to mount the device.
>
> Regards,
> Mukund jampala

Dear Mukund JB:

What did you do that did not work?
I have difficulty also, from time to time, mounting my
Compact Flash device using a CF->USB media reader.

You may simply be missing the needed drivers. :-|

I have 'usb-storage' listed when I:
# lsmod

I first insert the memory device onto the reader.
Then connect the USB cable to my computer.
# tail -f /var/log/messages

Jul 29 14:42:24 g2000 kernel: hub.c: new USB device 00:10.3-1, assigned address 2
Jul 29 14:42:27 g2000 kernel: Initializing USB Mass Storage driver...
Jul 29 14:42:27 g2000 kernel: usb.c: registered new driver usb-storage
Jul 29 14:42:27 g2000 kernel: scsi1 : SCSI emulation for USB Mass Storage devices
Jul 29 14:42:27 g2000 kernel: sda: sda1
Jul 29 14:42:27 g2000 kernel: USB Mass Storage support registered.

Then I:

# mount /dev/sda1 /mnt/hd

# df -T

To show mounted filesystems and types.
Mine shows type 'vfat' for my Compact Flash -> USB device.

# tail -f /var/log/messages

To show errors

HTH, Chuck


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RE: Linux FAT12 mount issue (digital media problem)

Dear chunk,

Here are the details of my understanding.

The cannon camera (other devices too) formatted SD is indeed a partition
FAT12. When I said
Sfdisk -l, it showed the fs ID as 1. 1 is indeed the FAT12 fs ID.

Attached are the logs for win and camera device sfdisk -Vl /dev/tfa0.

Mine is a FAT12 device.
So, what did u do to fix this problem? U did not mention it.

Regards,
Mukund Jampala


>-----Original Message-----
>From: chuck gelm [mailto:chuck@gelm.net]
>Sent: Saturday, July 30, 2005 2:23 AM
>To: Mukund JB.
>Cc: linux-newbie@vger.kernel.org
>Subject: Re: Linux FAT12 mount issue (digital media problem)
>
>Mukund JB. wrote:
>> Dear all,
>>
>> I have a problem with mounting the SD cards formatted on the digital
>> camera on my Linux BOX. But I am able to mount and access the same
>> devices on WinXP.
>>
>> I think someone might have faced the same problem. Did u find some
>> solution to this? Please convey if any.
>>
>> When I have tried to find the fs type SD card formatted in camera.
>> I found it to be FAT12. Does the linux kernel have the support for
FAT12
>> fs?
>> I suppose it does. But, why am I not able to mount the device.
>>
>> Regards,
>> Mukund jampala
>
>Dear Mukund JB:
>
> What did you do that did not work?
>I have difficulty also, from time to time, mounting my
>Compact Flash device using a CF->USB media reader.
>
> You may simply be missing the needed drivers. :-|
>
>I have 'usb-storage' listed when I:
># lsmod
>
> I first insert the memory device onto the reader.
> Then connect the USB cable to my computer.
># tail -f /var/log/messages
>
>Jul 29 14:42:24 g2000 kernel: hub.c: new USB device 00:10.3-1, assigned
>address 2
>Jul 29 14:42:27 g2000 kernel: Initializing USB Mass Storage driver...
>Jul 29 14:42:27 g2000 kernel: usb.c: registered new driver usb-storage
>Jul 29 14:42:27 g2000 kernel: scsi1 : SCSI emulation for USB Mass
Storage
>devices
>Jul 29 14:42:27 g2000 kernel: sda: sda1
>Jul 29 14:42:27 g2000 kernel: USB Mass Storage support registered.
>
>Then I:
>
># mount /dev/sda1 /mnt/hd
>
># df -T
>
>To show mounted filesystems and types.
>Mine shows type 'vfat' for my Compact Flash -> USB device.
>
># tail -f /var/log/messages
>
>To show errors
>
>HTH, Chuck
>

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Re: Linux FAT12 mount issue (digital media problem)

Dear Mukund JB.:

I have some comments inline.

Mukund JB. wrote:

>Dear chunk,
>
>Here are the details of my understanding.
>
>The cannon camera (other devices too) formatted SD is indeed a partition
>FAT12. When I said
>
>
No, you did not say "sfdisk" in your original message.
I am not familiar with "sfdisk" as either a console command or as a device.

>Sfdisk -l, it showed the fs ID as 1. 1 is indeed the FAT12 fs ID.
>
>
What is "it"? ^

>Attached are the logs for win and camera device sfdisk -Vl /dev/tfa0.
>
>
I think that attachments are not passed through a 'list server'. I see
no attachment(s).

>Mine is a FAT12 device.
>So, what did u do to fix this problem? U did not mention it.
>
>
You did not describe your problem in enough detail for me to understand
what you did or what happened that you did not expect to happen or
what did not happen that you expected to happen.

Please indicate, explicitly, what devices you have. i.e.
Memory card (SD?) and how you are connecting your camera or its memory card
to your computer (USB?)...

Please show exactly what you typed and exactly any error message(s).

Please copy and paste (not attach) the new lines appended to
/var/log/messages
when your camera device is connected to your computer.

Regards, Chuck

>Regards,
>Mukund Jampala
>
>
>
>
>>-----Original Message-----
>>From: chuck gelm [mailto:chuck@gelm.net]
>>Sent: Saturday, July 30, 2005 2:23 AM
>>To: Mukund JB.
>>Cc: linux-newbie@vger.kernel.org
>>Subject: Re: Linux FAT12 mount issue (digital media problem)
>>
>>Mukund JB. wrote:
>>
>>
>>>Dear all,
>>>
>>>I have a problem with mounting the SD cards formatted on the digital
>>>camera on my Linux BOX. But I am able to mount and access the same
>>>devices on WinXP.
>>>
>>>I think someone might have faced the same problem. Did u find some
>>>solution to this? Please convey if any.
>>>
>>>When I have tried to find the fs type SD card formatted in camera.
>>>I found it to be FAT12. Does the linux kernel have the support for
>>>
>>>
>FAT12
>
>
>>>fs?
>>>I suppose it does. But, why am I not able to mount the device.
>>>
>>>Regards,
>>>Mukund jampala
>>>
>>>
>>Dear Mukund JB:
>>
>> What did you do that did not work?
>>I have difficulty also, from time to time, mounting my
>>Compact Flash device using a CF->USB media reader.
>>
>> You may simply be missing the needed drivers. :-|
>>
>>I have 'usb-storage' listed when I:
>># lsmod
>>
>> I first insert the memory device onto the reader.
>> Then connect the USB cable to my computer.
>># tail -f /var/log/messages
>>
>>Jul 29 14:42:24 g2000 kernel: hub.c: new USB device 00:10.3-1, assigned
>>address 2
>>Jul 29 14:42:27 g2000 kernel: Initializing USB Mass Storage driver...
>>Jul 29 14:42:27 g2000 kernel: usb.c: registered new driver usb-storage
>>Jul 29 14:42:27 g2000 kernel: scsi1 : SCSI emulation for USB Mass
>>
>>
>Storage
>
>
>>devices
>>Jul 29 14:42:27 g2000 kernel: sda: sda1
>>Jul 29 14:42:27 g2000 kernel: USB Mass Storage support registered.
>>
>>Then I:
>>
>># mount /dev/sda1 /mnt/hd
>>
>># df -T
>>
>>To show mounted filesystems and types.
>>Mine shows type 'vfat' for my Compact Flash -> USB device.
>>
>># tail -f /var/log/messages
>>
>>To show errors
>>
>>HTH, Chuck
>>
>>
>
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Re: Linux FAT12 mount issue (digital media problem)

On Monday 01 August 2005 02:41, chuck wrote:

Mukund JB. wrote:

> Dear chunk,
>
>Here are the details of my understanding. =A0
>
>The cannon camera (other devices too) formatted SD is indeed a partiti=
on
>FAT12. When I said

Most linux distros now have hotplug which should take care of loading t=
he=20
correct module(s) for camera memory driver devices.
A way of getting around not knowing what module to use for the filesyst=
em is=20
to use the "-t auto" option of mount.

mount -t auto /dev/xxx /mnt/xxx
=20
chuck gelm. Wrote:

> Please copy and paste (not attach) the new lines appended to=20
> /var/log/messages
> when your camera device is connected to your computer.

dmesg would be much more informative and indeed shead more light=20
than /var/log/messages would.

Regards Richard.
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