A method and apparatus for partial self-servo writing a disk surface in a disk drive using servo wedge propagation is provided. In one embodiment, servo information is written by a servo track writer near an outer diameter of the disk surface. The servo information is grouped into a 1 set of servo information and a 2 set of servo information. The disk drive's read head is used to read the 1 set of servo information in order to position the disk drive's write head to write servo information which is radially-aligned with the 2 set of servo information. Then, the disk drive's read head is used to read the 2 set of servo information in order to position the disk drive's write head to write servo information which is radially-aligned with the 1 set of servo information. The process is repeated on a track-by-track basis until servo information is written from the outer diameter of the disk surface to the inner diameter of the disk surface, as if it was entirely written by a servo track writer.