A disc-shaped information recording medium includes a first recording
layer (L0 layer) having (I) a first trial write area (101P-1) for trial
write of first trial write information for calibration of the laser beam
along the first track path (TP1) from the inner circumference toward the
outer circumference and (II) a first recording area for recording the
first recording information along a first track path (TP1), in this order
from the inner circumference side. Furthermore, the disc-shaped
information recording medium includes a second recording layer (L1 layer)
having (I) a second trial write area (101P-2) for trial write of second
trial write information for calibration of the laser beam along the
second track path (TP2) from the outer circumference toward the inner
circumference and (II) a second recording area for recording the second
recording information along a second track path (TP2), in this order from
the inner circumference side.