Window drive shows only 30 gb after format

This morning I saw my window was stuck at boot page with system date and time it was not coming out then I decided to format this window 10. During format I saw laptop volume was only showing 30 gb I thought once I format and install window I would see rest 470 gb in unallocated volume but it is not there when I check in command prompt list disk it is only showing c drive size which is 30 gb. Please help