SD Card not recognised

[r3bol]

My SD Card seems to be having some problems. It doesn't automount, and gParted doesn't recognise it. Trying sudo fdisk -l, I get

Disk /dev/mapper/cryptswap1: 2135 MB, 2135949312 bytes
255 heads, 63 sectors/track, 259 cylinders, total 4171776 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xf6ddc267

Disk /dev/mapper/cryptswap1 doesn't contain a valid partition table

...where it should contain info about /dev/sdc
How can I get my card back? Thanks.

[r3bol]

Actually the output above might not even be related to the card as it is 4GB.

[r3bol]

I managed to get it to a windows pc and format it there. It now recognises it in ubuntu again.