Most of the developers come around this question,can we reseed a identity column?The answer is yes.There is a DBCC command to Re-seed the identity value.
–Reseed the identity column
Format: DBCC CHECKIDENT (table_name,reseed,reseed_value)
Example : DBCC CHECKIDENT (t2,reseed,0)
Here the table again starts the identity value from 1,2,3…