Hi friends, having bad time here. Last week I had to format my system due to virus infection. But before formatting I backed up some of my essential data in an external hard drive. Yesterday when I opened the backup file I just couldn't. The file couldn't be opened. I don't know it's corruption or what but very bad for me. This backup file contains my essential data but I can't extract it. Whenever I open it I get this error: "The backup file is unusable. You must erase it, or choose another file"
Please help me. Is there any way to extract a corrupt backup file?