which type of disk is disk 2? course hero

Why was the Disk II so important?

Since the Disk II controller was completely software-operated, the user had total control over the encoding and format so long as it was within the physical limits of the drive mechanism and media. This also allowed software companies to use all sorts of ingenious copy protection schemes.

What is the difference between Disk II and Disk III?

The first variation of the Disk II introduced for the Apple ///, called the Disk III (A3M0004), used the identical drive mechanism inside a modified plastic case with a proprietary connector. With some modification both drives are interchangeable.

What is an Apple Disk II?

The Disk II was designed specifically for use with the Apple II personal computer family to replace the slower cassette tape storage. These floppy drives cannot be used with any Macintosh without an Apple IIe Card as doing so will damage the drive or the controller.

How many drives can you put on a Disk II?

DB-19 adapters for the original Disk II were eventually available for use with Apple's later connector standard. Up to 14 drives could be attached to one Apple II or Apple IIe computer - two drives per controller card, one card per slot, and there were seven usable slots per computer.

What is a disk 2?

The Disk II Floppy Disk Subsystem, often rendered as Disk ] _{is a 5#N#+#N#1⁄4 -inch floppy disk drive designed by Steve Wozniak at the recommendation of Mike Markkula, and manufactured by Apple Computer, Inc. It went on sale in June 1978 at a retail price of US$495 for pre-order; it was later sold for $595 (equivalent to $2,360 in 2020) including the controller card (which can control up to two drives) and cable. The Disk II was designed specifically for use with the Apple II personal computer family to replace the slower cassette tape storage. These floppy drives cannot be used with any Macintosh without an Apple IIe Card as doing so will damage the drive or the controller.}

Why is Apple II not a disk drive?

The Apple II's lack of a disk drive was "a glaring weakness" in what was otherwise intended to be a polished, professional product. Speaking later, Osborne 1 designer Lee Felsenstein stated, "The difference between cassette and disk systems was the difference between hobbyist devices and a computer.

What is the name of the Apple 5.25" disk?

Along with the UniDisk 3.5", Apple introduced the UniDisk 5.25 (A9M0104) in a plastic case, which modernized the appearance of the Disk II to better match the Apple IIe. Since the UniDisk 5.25" could fully replace the Disk II in all its uses, the original Disk II was canceled at this point.

What is an Apple IIc?

The Disk IIc (A2M4050) was a half-height 5#N#+#N#1⁄4 -inch floppy disk drive introduced by Apple Computer in 1984 styled for use alongside the Apple IIc personal computer, the only Apple II to contain a 5#N#+#N#1⁄4 -inch built-in disk drive mechanism. The disk port on the original IIc was only designed to control one additional, external 5#N#+#N#1⁄4 -inch disk drive, and as such, this particular drive omitted a daisy-chain port in back. It was possible to use it on other Apple II models, so long as it came last in the chain of drive devices (due to lacking a daisy-chain port); but since the Disk IIc was sold without a controller card, the Apple IIc computer needing none, it had to be adapted to an existing Disk II controller card in this case. Essentially the same as the full-height Disk II, Apple sold the Disk IIc for US$329, and other companies later sold similar drives for less.

How many drives can be used on an Apple II?

DB-19 adapters for the original Disk II were eventually available for use with Apple's later connector standard. Up to 14 drives could be attached to one Apple II or Apple IIe computer - two drives per controller card, one card per slot, and there were seven usable slots per computer.

How many drives can an Apple II computer use?

Each unit required its own disk controller card (as each card could still control only two drives) and the number of units was thus limited to the number of available slots; in practice, few uses of the Apple II computer can make good use of more than two 5. +. 1⁄4 -inch drives, so this limitation mattered little.

When did Apple start making floppy disks?

In 1984, Apple had opted for the more modern, Sony-designed 3. +. 1⁄2 -inch floppy disk in late-model Lisas and the new Apple Macintosh. Accordingly, they attempted to introduce a new 3. +. 1⁄2 -inch 800-kilobyte floppy disk format for the Apple II series as well, to eventually replace the 140-kilobyte Disk II format.