Change SD card partition type

Hello,

I'm trying to install Android in my SD Card (1GB or 2 GB) but I can't
change the partition from FAT16 to Linux and Linux Swap.

My Laptop has a SD reader slot, and, in my linux this device is detected
like this:

debian:/# fdisk -l
Disk /dev/mmcblk0: 1014 MB, 1014497280 bytes
28 heads, 27 sectors/track, 2620 cylinders
Units = cylinders of 756 * 512 = 387072 bytes
Disk identifier: 0x00000000

        Device Boot      Start         End      Blocks   Id  System
/dev/mmcblk0p1               1        2621      990594+   6  FAT16
debian:/# 


When I try to edit the partitions, and set the write option, I've got a
follow message:
"Wrote partition table, but re-read table failed.  Reboot to update table."

I tryed to change the partitions from the Qtopia, but (CFDISK, FDISK,
GPARTED) doesn't exists, 

Somebody have any tips to help me?

Thanks, 
Rodolfo

Maybe this might help:

http://billforums.station51.net/viewtopic.php?f=1&t=5

specifically my comments further down the page:

http://processors.wiki.ti.com/index.php/How_to_Make_3_Partition_SD_Card

Good luck!