The MAPS command examines or updates bitmaps. The format of the MAPS command is:
M[APS] /BL[OCK]=block-number
/BU[SY]
/F[REE]
/M[ASTER]
/R[ESTORE_ALL]
MAPS can flag blocks as being either /BUSY or /FREE. The /MASTER qualifier reflects the current status of a local bitmap back into the master map. The /RESTORE_ALL qualifier rebuilds all maps and should be used with caution since it can destroy important information.
By default, MAPS shows the status of the bitmap for the specified block.