Method and device for searching for the first available, good substitute block in an optical storage recording medium identifies if there is at least one entry in a secondary defect list without an entry for a substitute block allocation.

摘要

An optical pick-up (602) plays data from, and records data to, an optical disk (601). A servo (603) controls the optical pick-up to keep a distance between an objective lens, the optical disk and a fixed track. A data processor (604) receives and sends its processed data to the optical pick-up. Through this data processor a DMA information reader (606) reads information registered in a DMA range on the optical disk. An interface exchanges data with an external host (608).