Database is not reflecting in sh.status()

I have a 2 shard (s1 and s0 )servers with repl set. s1 has 2 dbs (db-A and db-B) and one of the db is sharded (db-B). When i do sh.status() from mongos only (db-B) is displayed. I am wondering what i need to do for identifying of db-A by mongos.