Question

Difference between fragmentation and defragmentation

Answer 1

Fragmentation is caused when an operating system breaks a file into pieces because there is not enough space on the storage device where the file was originally saved. Defragmentation is the term given to the process of scanning the file system and rejoining the split files back into consecutive pieces.

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Answer 2

Fragmentation occurs on a hard drive, a memory module, or other media when data is not written closely enough physically on the drive. Those fragmented, individual pieces of data are referred to generally as fragments. Defragmentation, then, is the process of un-fragmenting or piecing together, those fragmented files so they sit closer - physically - on the drive or other media, potentially speeding up the drive's ability to access the file.