The grid below represents a fragmented hard disk. Each colour is a different file — numbers show fragment order. Grey blocks are unused space. Drag file fragments onto free grey blocks to rearrange them.
Goal: each file's fragments must be contiguous and in order (reading left→right, top→bottom). Files can be in any order. No gaps within a file.
Hard Disk — 100 Sectors (10 × 10)
Ready. Drag fragments to defragment the disk.
▶▶ READ SPEED COMPARISON
Watch the read head access the same file on a fragmented vs defragmented disk.
On a fragmented disk the head must physically seek to scattered locations — on a defragmented disk it reads in one smooth pass.
⚠ Fragmented Disk
Read Head
0
0ms
0
✓ Defragmented Disk
Read Head
0
0ms
0
DEFRAG COMPLETE
—
moves to defragment
All file fragments are now contiguous and in order. The disk has been successfully defragmented.