A media error on a write may occur when the disk has problems locating the position to write the data. If the management function of reassigning the LBA to a different physical location fails for any ...A media error on a write may occur when the disk has problems locating the position to write the data. If the management function of reassigning the LBA to a different physical location fails for any reason then an error is reported, then the controller responds to this error by failing the disk. While a disk may have a media fault on a sector, it is extremely unlikely that another disk will have a media fault at the same block address.