Solved! My external hard disk is not showing solution

hello amit,

What jsmmakkar says.. you might want to try file recovery software.
there are several good programs out there.

Recuva is a good one,
Auslogics got a good software too: file recovery software (free to try)

If it still not shows any data, and the data is very important you can also go to a data recovery expert somewhere near where you live. They got tools to recover almost all data.

good luck!