CHDK
Voor mijn Canon S90
firmware 1.01c
Using a 8GB sd card:
make 2 partitions with fdisk on linux (sudo fdisk /dev/sdb)
small fat16 (+50M type 6)
large fat32 (rest, type b)
sudo mkfs.vfat -F16 /dev/sdb1
sudo mkfs.vfat /dev/sdb2
first partition bootable