Originally Posted by tuxsavvy

That looks like its seriously borked, the eMMC chip. I'd check:

Code:

dmesg

for any useful information as to why eMMC is now unreadable.

Otherwise paste the output of your dmesg here.

(edit) the output of a working eMMC with 32GB microSDHC inserted should look something like this:

Code:

Nokia-N900:~# sfdisk -l

Disk /dev/mmcblk1: 977120 cylinders, 4 heads, 16 sectors/track
Units = cylinders of 32768 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/mmcblk1p1          0+ 977119  977120-  31267832   43  Unknown
/dev/mmcblk1p2          0       -       0          0    0  Empty
/dev/mmcblk1p3          0       -       0          0    0  Empty
/dev/mmcblk1p4          0       -       0          0    0  Empty

Disk /dev/mmcblk0: 977024 cylinders, 4 heads, 16 sectors/track
Units = cylinders of 32768 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/mmcblk0p1          1  884864  884864   28315648   43  Unknown
/dev/mmcblk0p2     884865  950400   65536    2097152   83  Linux
/dev/mmcblk0p3     950401  974976   24576     786432   82  Linux swap / Solaris
/dev/mmcblk0p4          0       -       0          0    0  Empty
Nokia-N900:~#