| (subclass DiskDrive ComputerComponent) | ComputerInput.kif 730-730 | Disk drive is a subclass of computer component |
| (subclass DiskDrive ComputerIODevice) | ComputerInput.kif 731-731 | Disk drive is a subclass of computer I/O device |
| (subclass ExternalDiskDrive DiskDrive) | ComputerInput.kif 742-742 | External disk drive is a subclass of disk drive |
| (subclass DiskDriveWithRemovableDisks DiskDrive) | ComputerInput.kif 752-752 | Disk drive with removable disks is a subclass of disk drive |
| (subclass HardDiskDrive DiskDrive) | ComputerInput.kif 762-762 | Hard disk drive is a subclass of disk drive |
| (subclass OpticalDiscDrive DiskDrive) | ComputerInput.kif 770-770 | Optical disc drive is a subclass of disk drive |
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