Method and apparatus for disc drive data security using a defect list
Method and apparatus for storing and retrieving copy-protected data within storage devices such as, for example, disc drives. Data that is to be copy protected is written on the storage device. A first data list, such as a manufacturer's storage device defect list, is copied and used to make a second data list. Then, the first data list is modified such that the area where the copy protected data is stored is identified as defective. Unless a request to read the copy protected data is received, the first data list is used and the copy protected data area is considered defective. However, if a request to read the copy protected data is received, the second data list is used and the copy protected data is read from its storage location.
1. A method for writing data on a disc drive, comprising:
determining if a request has been made to write copy protected data or unprotected data;
providing data to be written;
copying a first data list to a second data list if a request was made to write copy protected data, wherein said second data list is an exact copy of said first data list;
writing the provided data to a disc drive media; and
modifying the status of the written data within the first data list as defective if a request was made to write copy protected data.
2. The method of claim 1 , wherein the first and second list comprise a defect list.
3. The method of claim 1 , wherein the first list comprises a manufacture's defect list.
4. The method of claim 1 , wherein the second list comprises a copy of the manufacture's defect list.
5. The method of claim 1 , wherein prior to the step of providing data to be written, a step comprising, providing a copy protection command signal.
6. The method of claim 1 , wherein modifying the status comprises the step of marking at least one of the written sector locations as defective.
7. The method of claim 6 , wherein the sectors are defined by a logical block address.