Disk drive controller system

Details Disk drive controller system Disk drive controller system

1990-01-24

1991-12-24

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

G11B 509

Patent

active

050758055

ABSTRACT:
A disk drive system includes a disk drive controller system having separate head positioning and data transfer subsystems and supporting up to four disk drives, two of which may be removable and two of which may connect through a standard ST506 interface. The system provides a read and write protected cylinder for removably drive and a read only cylinder for removable drives which may store a unique serial number as well as other write protected data. Each removable disk drive may includes a register storing an identification code which may be used to control operation of the drive.

REFERENCES:
patent: 3843967 (1974-10-01), Mulvany
patent: 4414590 (1983-11-01), Merdian, Jr. et al.
patent: 4737867 (1988-04-01), Ishikwawa et al.
patent: 4833554 (1989-05-01), Dalziel et al.

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