A phase-change optical recording medium which attains a high erasability in overwriting at a high linear velocity and has high recording sensitivity, excellent OW cycling characteristics, and excellent weatherability. A plurality of wedge assemblies are connected to a drive shaft, wherein upon actuation of the drive shaft, the wedge assemblies are driven to contact the filler cams and rotate the filler cams from a non-flanging to a flanging position. The hot strip is cold-worked in one or more steps at a ratio of the cold roll of at least 86%. A compartment is configured with the housing and is sized to receive the user-removable module.