The MicroSD card in my G1 has three partitions on it - a 3GB+ FAT32 partition for files, an EXT3 (maybe 4?) partition that my rooted phone puts the applications on, and a Linux swap partition.

I just bought an 8GB card to replace my 4GB card, and I want to try to make this as seamless as possible. Is there a way to image the entire card, with all partitions, put it on the new card, and then expand the FAT32 partition to fill? I can do the last part, but it's the first part I'm not sure of.