To shorten the access time by measuring off-track characteristics to preliminarily calculate position correction data and performing the seek operation to a position, which is obtained in consideration of this position correction data, from the first at the time of the seek operation for data access.

This recording and reproducing device for disk-like storage medium is provided with at least a motor part 5 which rotates and drives a disk-like storage medium 4, a head part 1 which reads information data and position information of the disk-like storage medium 4, an operation processing part 2 which measures the extent of positional deviation synchronized with rotation of the disk-like storage medium 4 in accordance with read position information to calculate the position correction data, and a storage means where this calculated position correction data is stored. In this case, the head part 1 performs the seek operation to a target position preliminarily corrected on the basis of this calculated position correction information at the time of data access.