Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE products ( code number, name text, price number, manufacturer number )
TABLE: CREATE TABLE manufacturers ( code number, name text, headquarter text, founder text, revenue number )

### Question ###
What are the names of companies that do not make DVD drives?

### Accurate SQL ###

SELECT name FROM manufacturers EXCEPT SELECT T2.name FROM products AS T1 JOIN manufacturers AS T2 ON T1.manufacturer = T2.code WHERE T1.name = 'DVD drive'