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Tagged Image File Format  |  1989-04-24  |  116.8 KB  |  2544x3300  |  [TIFF/MAGS]
   ocr: Macintosh Internal Hard Disk 20SC System Requirements Touse a Macintosh Internal Hard Disk 20SC, you must have a Macintosh SE, Macintosh SE/30, Macintosh II, or Macintosh IIx personal computer. Technical Specifications Capacity Data capacity: 20megahyres (formatted) Data surfaces: 4 Hcads/Surfacc: 1 Block size: 512 bytes Total diskl blocks: 41,060 Blocks/Track: 17 Characteristics Average seek time: 681 milliseconds Rotational speed: 3,600rpm Startup lime: 20seconds Spin-down time: 20seconds Interfacc Connects directly to the Macintosh SE, MacintoshSE/30, Macintosh II, or Macintosh IIx via the ...