Method and apparatus for detecting/correcting defect area and related disk drive

摘要

Provided is a method and apparatus for detecting and correcting a defect of a recording medium. The method includes: monitoring a gain variation of a variable gain amplifier (VGA) amplifying a signal detected from a recording medium; detecting a defect location based on the gain variation of the VGA; and performing error correction by determining the detected defect location as a location of a symbol of which the error occurrence is predicted.