Sandisk 16GB SDHC not mountable

[Christian Rüb]

> Thanks for offering help.
> 
> 2010-10-02 01:28:02 Alfa21:
> > 2010-10-02 at 20:04 Christian Rüb
> > 
> > > I partitioned my 16GB SDHC (class 2) card
> > 
> > have you tried to use it as raw storage? (no filesystem)
> > 
> > cat plaintextfile.txt > /dev/mmcblk0p1
> > less -f /dev/mmcblk0p1
> 
> I could not read it back, but using /dev/mmcblk0 it showed up somewhere near the beginning (it was cat to /dev/mmcblk0p1 though)
> 
> > you should be able to read your contents of the original input file.
> > if you fail to less it on the FR, try the second command on your PC.
> 
> showed up at partition start
> 
> > 
> > try the same directly on /dev/mmcblk0 but this will destroy all your data on uSD (partition table &Co.)
> 
> I saw the contents only once and about at the same place when catting it to /dev/mmcblk0p1 (Freerunner)
> Once at the beginning and once about where 1 partitions starts (PC).
> 
> 
> > have you tried with a whole different fs, like fat32?
> 
> same result :( (Freerunner)
> On my PC FAT32 and ext3 work ...
> 
> Note that I booted using Qi and system is on NAND (kernel 2.6.29)
> 
> Christian

I now get all sort of weird behaviour:
I created ext2 on 1st partition on FR, then tried a fsck and got many "short read" errors, after that the partition table was gone.
I repartioned, created ext3 and after that could not even access SD card in any way.
dmesg gave a lot of:
[  244.985000] end_request: I/O error, dev mmcblk0, sector 169
[  244.995000] glamo-mci glamo-mci.0: Error after cmd: 0x8120
[  244.995000] mmcblk0: error -110 sending read/write command, response 0x0, card status 0x400b00
[  244.995000] end_request: I/O error, dev mmcblk0, sector 170
[  245.010000] glamo-mci glamo-mci.0: Error after cmd: 0x8120
[  245.010000] mmcblk0: error -110 sending read/write command, response 0x0, card status 0x400b00

Now even fdisk does not find the card anymore. As from the wiki I thought the card would work :(