mounting SFS partitions

I think if you installed with wubi your windows drive should auto mount at /host just open a file manager hit ctrl+l to enter the location bar then type /host in, that should show you your files

host shows only C drive files not others

i want to access others drives also

Oh sorry, reading back your question I should have realised that there were multiple drives. Try opening up disk utility (just search it in the dash) then looking in the side bar for the other drives. Click on one of them then click mount volume, this should get you your other drives

In the disk utility there are three partitions 245 GB NTFS (which is already mounted) , 236 GB unknown ( how to mount this one , there is no option to mount this ) and 3.9 GB NTFS new volume( mounting this gives error).

They are partitions, not drives. Even if a drive has a single drive with one partition using all the space, you still mount the partition. Windows incorrectly names partitions as drives. In windows if you have a single drive and partition it into 2 parts it will show you 'c drive' and 'd drive' even though there is only one drive, just 2 partitions. It confuses users when they come to an OS which names them correctly.

Can you give the output of:

sudo fdisk -l; lsb_release -a

Thanks

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x103d7974

   Device Boot Start End Blocks Id System
/dev/sda1 63 80324 40131 de Dell Utility
/dev/sda2 * 80325 36944324 18432000 42 SFS
/dev/sda3 36944325 515616815 239336245+ 42 SFS
/dev/sda4 515616816 976771119 230577152 42 SFS

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04 LTS
Release: 12.04
Codename: precise

ok and the output of:

mount

thanks

/dev/loop0 on / type ext3 (rw)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
/dev/sda2 on /host type fuseblk (rw,nosuid,nodev,locale=en_US.UTF-8)
/dev/sda1 on /media/RECOVERY type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
gvfs-fuse-daemon on /home/naveen/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=naveen)

Ok well the only partition not mounted is /dev/sda3

Try:

sudo mkdir /media/sda3
sound mount /dev/sda3 /media/sda3
nautilus /media/sda3 &

You can now access the data

it says

No command 'sound' found, did you mean:
 Command 'pound' from package 'pound' (universe)
 Command 'stund' from package 'stun' (universe)
 Command 'csound' from package 'csound' (universe)
sound: command not found

I think action parsnip may have misstyped the sound bit, try replacing the first word (sound) with sudo