External Hard Disk Format Recovery

No matter we format the external hard disk accidentally or intentionally, the result would not be changed which is all data saved on it would be lost. It seems a huge loss for us, especially the lost information is very important or precious. Only if those lost files could be got back. Now the dream come true that we can restore what we need form the external hard disk after formatting it. Here is a hard disk formatted case as follows:

Raw external hard disk error

It is not an expected thing to meet a raw external hard disk. We can not open the external hard disk, we can not access data saved on the external hard disk previously, and we can not save any new data on the external hard disk after it turning to raw.

recover data from the formatted external hard disk

Do you know external hard disk after formatting data recovery I have an external hard disk and there have been saved a lot of files and folders on it. it is very convenient for me to access data i need no matter where i am and when it is. But there is something unpleasant happen to the external hard disk now. I formatted it by mistake yesterday. What disappoints me is that i have not backup any files which saved on the external hard disk previously. So i lose all of them at present. Those files are important for me indeed, and some of them are my work documents. I want to get that lost data back from but have no idea what should be done. Can you help me?