Gigabyte SD memory card

Tony Arnold tony.arnold at manchester.ac.uk
Tue Dec 21 20:08:43 UTC 2004


Jon,

Jon Dixon wrote:
> Can you still manually mount the 1GB disk when this happens?

Under Hoary, I was manually mounting the card anyway, as it is a server 
install with ni desktop stuff.

I think manula mouting under Warty would work. It seems to me it's the 
detection and creation of the dynamic device that's the problem, rather 
than the mounting of it.

Regards,
Tony.

> 
> - Jon
> 
> On Tue, 21 Dec 2004 13:21:44 +0000, Tony Arnold
> <tony.arnold at manchester.ac.uk> wrote:
> 
>>Jon et al.,
>>
>>On Tue, 2004-12-21 at 12:00 +0000, Jon Dixon wrote:
>>
>>>Glad it's working.
>>
>>I may have spoken to soon! Behaviour is a little odd. If I plug a 256Mb
>>card in, then a device/dev/sda1 gets created and mounted. If I take this
>>card out and plug the 1GB card in quickly enough that seems to use the
>>existing /dev/sda1 and it gets mounted, however, if I wait for
>>the /dev/sda1 device to be removed by the system, the 1GB card does not
>>get mounted and the /dev/sda1 device does not get re-created.
>>
>>This seems to be the behaviour on both warty and hoary! A slight
>>difference on hoary is that after the /dev/sda set of devices has been
>>removed, the next time I plug a working card in, it creates /dev/sdb and
>>not /dev/sda!
>>
>>Regards,
>>Tony.
>>
>>>On Tue, 21 Dec 2004 11:58:21 +0000, Jon Dixon <dixon.jon at gmail.com> wrote:
>>>
>>>>Just to throw more fuel on the fire...
>>>>
>>>>Perhaps the reason it cannot read from the beginning (block 0) and
>>>>giving the I/O error could also be down to the 'what the hell size are
>>>>you?' problem.
>>>>
>>>>Just a thought ...
>>>>
>>>>Has anyone had experience with large 512MB/1GB CF cards, that may also
>>>>be able to help Tony here?
>>>>
>>>>- Jon
>>>>
>>>>On Tue, 21 Dec 2004 11:32:49 +0000, Tony Arnold
>>>><tony.arnold at manchester.ac.uk> wrote:
>>>>
>>>>>On Tue, 2004-12-21 at 11:43 +0100, Le grand pinguin wrote:
>>>>>
>>>>>>On Tue, Dec 21, 2004 at 05:23:36AM -0500, strips wrote:
>>>>>>
>>>>>>>>Dec 20 15:44:45 aca-vnt kernel: sda : READ CAPACITY failed.
>>>>>>>
>>>>>>>Well.. either the kernel or your reader doen't support 1GB SD cards.
>>>>>>>Tried the reader on another linux kernel or maybe Windows?
>>>>>>
>>>>>>Hmm, is this really the relevant log entry? Somehow i think this
>>>>>>
>>>>>>1) > kernel:  /dev/scsi/host4/bus0/target0/lun0:<3>Buffer I/O error on device
>>>>>>   > sda, logical block 0
>>>>>>2) > Dec 20 15:44:45 aca-vnt kernel:  unable to read partition table
>>>>>>
>>>>>>is more important. Two questions to the OP:
>>>>>>
>>>>>> - is this disk allready formated? (does it have a filesystem)?
>>>>>>   Without a filesystem automaounting can'T work :-)
>>>>>
>>>>>Yes, and the card mounts fine on a Windows box.
>>>>>
>>>>>
>>>>>> - 'I/O error' sounds nasty - is it possible that the disk is damaged?
>>>>>>   (the kernel tries to read block 0 on the device (to read the partition
>>>>>>    table) but the device (disk) reports an error.
>>>>>
>>>>>It's brand new and works on Windows and my Palm, so I assume the card is
>>>>>OK.
>>>>>
>>>>>I had assumed the above messages were because it could not deal with the
>>>>>size of the disk, but ...
>>>>>
>>>>>
>>>>>Regards,
>>>>>Tony.
>>>>>--
>>>>>Tony Arnold, IT Security Coordinator, University of Manchester,
>>>>>Manchester Computing, Kilburn Building, Oxford Road, Manchester M13 9PL.
>>>>>T: +44 (0)161 275 6093, F: +44 (0)870 136 1004, M: +44 (0)773 330 0039
>>>>>E: tony.arnold at manchester.ac.uk, H: http://www.man.ac.uk/Tony.Arnold
>>>>>
>>>>>--
>>>>>ubuntu-users mailing list
>>>>>ubuntu-users at lists.ubuntu.com
>>>>>http://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>>>>>
>>>>
>>--
>>Tony Arnold, IT Security Coordinator, University of Manchester,
>>Manchester Computing, Kilburn Building, Oxford Road, Manchester M13 9PL.
>>T: +44 (0)161 275 6093, F: +44 (0)870 136 1004, M: +44 (0)773 330 0039
>>E: tony.arnold at manchester.ac.uk, H: http://www.man.ac.uk/Tony.Arnold
>>
>>
> 
> 
> 

-- 
Tony Arnold, IT Security Coordinator, University of Manchester,
Manchester Computing, Kilburn Building, Oxford Road, Manchester M13 9PL.
T: +44 (0)161 275 6093, F: +44 (0)870 136 1004, M: +44 (0)773 330 0039
E: tony.arnold at manchester.ac.uk, H: http://www.man.ac.uk/Tony.Arnold




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