On Sun, Jul 27, 2014 at 5:29 PM, John Jason Jordan <joh...@comcast.net> wrote: > I have a 2GB SD card that a medical device writes data to daily. I view > the data periodically myself to keep tabs on things. To do so I just > insert the card in the card reader slot in my laptop, whereupon it > appears grayed out in Xfce's "Places" widget. By right-clicking I can > mount it and then view the data. As far as I know it is formatted > FAT32. > > The other day, concomitant with the soda in the keyboard disaster, it > no longer appears in the Places widget. However, the medical device > still recognizes it and appears to be continuing to write data to it. > And dmesg sees it, albeit with an error message: > > [198579.916202] mmc0: new high speed SD card at address b368 > [198579.916537] mmcblk0: mmc0:b368 SD02G 1.76 GiB > [198579.918556] mmcblk0: unknown partition table > > I also tried using an external USB card adapter, but I still can't > mount the card. The results in dmesg are different, however: > > [199653.623925] Read(10): 28 00 00 00 00 00 00 00 08 00 > [199653.625085] sd 8:0:0:0: [sdd] Unhandled sense code > [199653.625087] sd 8:0:0:0: [sdd] > [199653.625087] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE > [199653.625088] sd 8:0:0:0: [sdd] > [199653.625089] Sense Key : Medium Error [current] > [199653.625090] sd 8:0:0:0: [sdd] > [199653.625091] Add. Sense: Unrecovered read error > [199653.625092] sd 8:0:0:0: [sdd] CDB: > [199653.625093] Read(10): 28 00 00 00 00 00 00 00 08 00 > > >From past experience, if I reformat it the medical device will throw a > fit, but then offer to reformat it. I suspect that it reformats it and > also writes some key files that the device needs in order to recognize > it. I have not yet reformatted it because if I do I will lose several > days worth of data - the medical device stores no data internally. > > I am curious why the medical device can seemingly write to the card, > but Xubuntu 13.10 cannot even mount it, and what might have gone wrong > to cause the problem. Perhaps the results from dmesg will mean > something to someone here.
How does the medical device respond to a full card? -Denis _______________________________________________ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
