Patent ID: 8125723

Claim:
A method for determining a cross-track density capability of a recording media, the method comprising: squeezing a victim track with a first aggressing side track writing sequence until a signal stored on the victim track reaches a threshold level of degradation, the first aggressing side track writing sequence comprising: iteratively displacing the side track in an across-track direction toward the victim track and performing a side track write n times with each iteration; determining a first erase band width associated with the first aggressing side track writing sequence; squeezing a victim track with a second aggressing side track writing sequence until a signal stored on the victim track reaches a threshold level of degradation, the second aggressing side track writing sequence comprising: iteratively displacing the side track in an across-track direction toward the victim track and performing a side track write m times with each iteration, wherein m is different than n; determining a second erase band width associated with the second aggressing side track writing sequence; and generating, from the first and second erase band width, a model characterizing the erase band width of the media as a function of the number of side track writes in an aggressing side track writing sequence.