Gigabyte SD memory card

[Tony Arnold]

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