从SSD的读写原理来看,alignment跟有几个区无关 The alignment of the SSD is required to assure that a logical sector starts exactly at the beginning of a physical page of the SSD. Without the alignment, the sector boundaries and the page boundaries will not match and sectors will span pages. That would require for a Windows write operation to clear two blocks in lieu of only one thus reducing the write speed by 50%. http://www.sevenforums.com/tutorials/113967-ssd-alignment.html