Which phrase in the passage the reader to understand the meaning of the word fragmented?

when you save, change, or delete a file on a computer, that file can become fragmented. each change that is made is stored in a different place on your computer's hard drive than where the file was originally stored. when you alter a file, more file locations are created in order to store those changes. this can slow down your computer because it has to search in many different locations on the hard drive in order to open a file. to solve this problem, your computer has a program called a disk defragmenter. this program rearranges the fragmented files. as a result, your computer will run more quickly and smoothly.