a filesystem based on a flash disk

In case you have a flash based pci express device in your system, probably it's better to create a filesystem witch 4k block size ( instead of the default 512 bytes for disk systems )

i)use parted post installation to make the partition and then type the following example (if your partition is called for instance /dev/sda2):

mkfs -t ext3 -b 4096 /dev/sda2