Rewrite operation for recording bands

摘要

Systems and methods are disclosed for performing a rewrite operation on recording bands of a data storage medium. In some embodiments, data may be read from a target band including a plurality of tracks, and modified. A portion less than all of the modified data is stored to a nonvolatile memory, and all of the modified data is written to the target band. In some embodiments, modified data corresponding to the first two tracks of the target band is stored to the nonvolatile memory, and modified data corresponding to the third track of the target band is written back to the first physical track. Each track may be written in order, ending with the modified data corresponding to the first two tracks. The result may be that data for each track in the band has shifted up two tracks, with data for the first two tracks moved to the end.

主权项

1. An apparatus comprising:
a circuit configured to:
read existing data from a target band including a plurality of data storage areas;modify the existing data with other data to create modified data;store a portion of the modified data to a nonvolatile memory, the portion being less than all of the modified data; andstore the modified data to the target band.