Asslam-o-Alaikum

mere pass 80gb ki harddisk hai us ki mein ne 3 partion ki thi ab mein ne us 3 partion delete kar aik partion 80gb ki bana li hai. us mein mera kuch important data tha woh bhi sath hi hatam ho gaya hai please usay recover kernay ka treeqa bata dein. please sab dost is sawal ko ghoor se per kar munasab jawab day. kiyonke yeh data mujhe chahein. please help me.!