microsSD doesn't mount any more!

Evgeny Karyakin anthropophagite at gmail.com
Mon Dec 8 12:00:05 CET 2008


2008/12/8 Tony Berth <tonyberth at googlemail.com>:
>> On Fri, Dec 5, 2008 at 2:45 PM, Andy Green <andy at openmoko.com> wrote:
>>> | [   30.365000] Buffer I/O error on device mmcblk0, logical block 8
>>> Are there some glamo-mci errors floating around before that?
> some more feedback:
>
> I did format my card with 'http://www.sdcard.org/consumers/formatter/' but
> still doesn't work on FR. I get following dmesg:
>
> [   73.055000] glamo-mci glamo-mci.0: Error after cmd: 0x8020
> [   73.055000] glamo-mci glamo-mci.0: Error after cmd: 0x8120
> [   73.060000] mmcblk0: error -110 sending read/write command
> [   73.065000] end_request: I/O error, dev mmcblk0, sector 0
> [   73.065000] Buffer I/O error on device mmcblk0, logical block 0
...

   I suffered (and to some extent still suffering) with similar
troubles and ended up completely "blank" SD card with "dd
if=/dev/random of=/dev/mmcblk0" command, and then repartition it with
fdisk as described in wiki[1]. Also you can try slowing down glamo
rate for SD access by getting some hints from[2], although the latter
trick has to deal with another problem.

[1] http://wiki.openmoko.org/wiki/Booting_from_SD#Partioning_the_SD_card
[2] http://docs.openmoko.org/trac/ticket/1743#comment:4




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