[ubuntu] Data recovery Help Needed

Hello friends,

I have installed Ubuntu 13.04 over my windows 7. While installing Ubuntu, I have made some mistake and my all partitions are gone. Previously there were 5 partitions (NTFS) of 200 GB on windows 7. But now I can see only 1 partion (ext4) of 1 TB in ubuntu system.

Unfortunately, I can't access my data now. Anybody can help me in this please? Can I recover my data / partitions?

I have only installed ubuntu 13.04, I haven't installed any other software on my ubuntu.


Many Thanks in advance.