Hi,
Need not panic, data can be recovered. Although the quantity of usable data recovered will depend on several factors, including: the operating system involved, the level of file fragmentation (if any), and the extent to which any overwrite may have occurred. But in your case since you have not performed any read/write operation on the drive the chances of data recovery is high.
I had reformatted my hard drive and had lost important files. But I successfully recovered my lost data using NTFS
Data Recovery Software You can use the same software if you have NTFS file system on your drive or you can choose any other software depending upon the file system and your requirement.
All the Best