unable to see my sata hdd in ubuntu in Compute-File browser

[pbraju123]

hi,

I am new to ubuntu. Recently I have made my system dual boot : Windows XP and ubuntu.. I have 2 hdd : one is 40GB IDE drive and other one is SATA 160GB hdd.
after installation I am not able to see my 160GB sata hdd in file browser. other drive is vissible . This is the fdisk dump :
:/$ sudo fdisk -l
\
Disk /dev/sda: 40.0 GB, 40060403712 bytes
255 heads, 63 sectors/track, 4870 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xf314f314

Device Boot Start End Blocks Id System
/dev/sda1 * 1 1275 10241406 7 HPFS/NTFS
/dev/sda2 2436 4870 19559137+ f W95 Ext'd (LBA)
/dev/sda5 2436 4870 19559106 b W95 FAT32

Disk /dev/sdb: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x9d3a878f

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 19456 156280288+ 7 HPFS/NTFS

i can see the sata drive here but in in file browser it is not vissible.
Please help me resolve this issue. one more thing, in disk usage analyser I can see the 160GB drive.