I have a 2GB sd card that I have partitioned with minitool partition wizard, Easus partition master and Gparted. Each time I create a 1.5GB fat16 partition set as primary and a 370MB ext2 partition set as primary. I do not have card reader capability so I do it through the phone connected by USB. I use windows 7 to verify that it sees the fat partition and can even copy files to it. I reboot my Samsung Admire (Metro) and it comes up saying the SD card is damaged. You may have to reformat. The phone reformats the card and its back to a single 1.86GB partition again.
I have done this about three times in the past and never had a problem. I got one of my old 2GB sd cards that was already partitioned and it showed the ext partition in Link2SD. Thought I was home free until I copied my backup files to the sd card and poof it was back to a single partition again.
I spent many hours and am out of ideas. Can anyone help?