One of the following pl_fd_status_codes, also affects fd.laststatus:
0- PL_FD_STATUS_OK: Completed successfully.
1- PL_FD_STATUS_FAIL : Physical flash memory failure (fatal).
2- PL_FD_STATUS_CHECKSUM_ERR: Checksum error has been detected in one of the disk sectors (fatal).
4- PL_FD_STATUS_INV_PARAM: Old_name is a NULL string, which is not allowed.
5- PL_FD_STATUS_DUPLICATE_NAME: File with the new_name already exists.
8- PL_FD_STATUS_NOT_READY: The disk is not mounted.
9- PL_FD_STATUS_NOT_FOUND: The old_name file is not found.
14- PL_FD_STATUS_TRANSACTION_CAPACITY_EXCEEDED: Too many disk sectors have been modified in the cause of the current transaction (fatal).