Patent ID: 8462458

Claim:
A method comprising: writing, using a head having a read element and a write element, a band of spiral sets, the band of spiral sets including a first spiral set and a second spiral set different from the first spiral set; writing, using the write element, servo information that includes one or more sets of servo wedges while the read element is servoing on the first spiral set; and servoing the read element on the second spiral set based on one or more determined conditions under which writing the servo information coincides with reading data from the first spiral set; where writing the servo information including the one or more sets of servo wedges includes: writing a first set of servo information that includes one or more first sets of servo wedges; determining a track in which at least one spiral of the first spiral set, at least one spiral of the second spiral set, and one of the one or more first sets of servo wedges have been written; and servoing between the at least one spiral of the first spiral set and the at least one spiral of the second spiral set using the determined track to write a second set of servo information different from the first set of servo information.