linux, format ext3

$ sudo -s
# fdisk -l
# umount /dev/sdb1
# fdisk /dev/sdb
n
p
# mke2fs -c /dev/sdb1
# tune2fs -j /dev/sdb1
# e2label /dev/sdb1 sdcardvolume
# chown -R user:user /media/sdcard


ref : http://tungchingkai.blogspot.jp/2008/01/format-sd-card-to-linux-filesystem-in.html