the present invention provides systems and methods for logging information regarding write operations directed to the disk being upgraded while the single disk is inoperable during the upgrade process . when the upgrade of the disk is complete , the logged information is used to update the information stored on the upgraded disk . the logged information is sufficient to update the disk contents without requiring a time consuming total reconstruction of the entire content of the disk . in one exemplary preferred embodiment , the logged information identifies a logical block numbers of the disk that are impacted by write operations processed while the disk firmware was being upgraded . only the data corresponding to the logged logical block numbers needs be reconstructed from the redundant data on other disks of the array . this method of data reconstruction is a less time consuming process than a total reconstruction of all data on the upgraded disk .