I have two volumes of amazon EC2 where by default 1 GiB volume using which has fulled. Now I want to use my second volume which is 9 Gim. I used command cat /proc/partitions I got major minor #blocks name

202 1 1048576 xvda1

202 80 9437184 xvdf
Then I hit mkfs.ext3 -F /dev/sdf its showing

mkfs.ext3: No such file or directory while trying to determine filesystem size

then I hit command df and I got

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/xvda1 1032088 1031280 0 100% /

tmpfs 313160 8 313152 1% /lib/init/rw

udev 297800 24 297776 1% /dev

tmpfs 313160 4 313156 1% /dev/shm

overflow 1024 32 992 4% /tmp

means still I am unable to use my 9 GiB space Volume.

I am conform I have two volume where attachment information is i-7e4fb41c:/dev/sda1 (attached) and i-7e4fb41c:/dev/sdf (attached)

where only sda1 is using.
Any one know how may I use my second volume(sdf). Thx