USB Hard Disk Problum

[sohail khan]

Assalam o alikum dosto
meri usb hardisk me ne bouhat saare software aur mere pc ka backup save kiya huwa tha ab us ka wo partition jis me me ne backup rakka huwa hai wo nahi kul raha hai jab us ko open karne k liye double click karta hoon to ye message aata hai
koi hal bataye plz
jab k dosra partition yaani G open ho raha hai