The problem begins here: http://askubuntu.com/questions/118224/i-have-big-problem-with-mount-partition
I tried to solve the problem by myself, but I messed up. I opened gparted magic and opened my hard disk and chose Create Partition Table and the disaster was done.
All the partitions on my hard disk (500 GB) have been removed. What can I do? I tried to use PTDD Partition Table Doctor 3.5, but it didn't help.
This drive had important data that I need to get back.
Thanks for everyone who helped me and Allah help me to reach to solve this problem i will write it for your benefit.
The solution is after the problem happened and I lost all partitions.
First: You must leave your hard disk alone. Don't make any changes, like create new partition or move to it new data, no! You must leave it without any changes!
Second: You must you use any program to recover your partitions. I used alot of one but the very good one is the program: MiniTool Partition Wizard It's free and good.
And in less than one minute my all hard disc return and thanks for all help me