Drive not shown

[Vishnu V]

hai
I bought a new Dell studio 15 laptop and i formated vista and installed ubuntu on it
now i have 4 drives(including swap)
but in places menu i cannot find one drive
output of sudo fdisk -l

Disk /dev/sda: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x68000000

Device Boot Start End Blocks Id System
/dev/sda1 * 1 6225 50002281 83 Linux
/dev/sda2 6226 38913 262566360 5 Extended
/dev/sda5 6226 6599 3004123+ 82 Linux swap / Solaris
/dev/sda6 6600 9089 20000893+ b W95 FAT32
/dev/sda7 9090 38913 239561248+ b W95 FAT32
vishnu@vishnu-laptop:~$


pls help
Thanks in advance

[Vishnu V]

Sorry !!
that drive was not properly formated that was the problem. and now i formated it and can take it from places menu