Disk II - Revision history

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2018-12-17T00:09:16Z

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Lucky at 00:59, 18 May 2007

2007-05-18T00:59:53Z

Lucky at 00:59, 18 May 2007

2007-05-18T00:59:32Z

Lucky at 00:58, 18 May 2007

2007-05-18T00:58:50Z

Lucky: New page: {{wp-orig}} {{Infobox Disk drive | name = Disk II | manufacturer = Apple | capacity = 114 KiB (pre-DOS 3.3), 140 KiB (DOS 3.3) | The '''Disk II''' was a 5¼-inch floppy disk drive d...

2007-05-18T00:58:28Z

New page: {{wp-orig}} {{Infobox Disk drive | name = Disk II | manufacturer = Apple | capacity = 114 KiB (pre-DOS 3.3), 140 KiB (DOS 3.3) | The '''Disk II''' was a 5¼-inch floppy disk drive d...

New page

{{wp-orig}}

{{Infobox Disk drive
| name = Disk II
| manufacturer = [[Apple]]
| capacity = 114 KiB (pre-DOS 3.3), 140 KiB (DOS 3.3)
|
The '''Disk II''' was a 5¼-inch floppy disk drive designed by Steve Wozniak and manufactured by [[Apple Computer]]. It was first introduced in 1978 at a retail price of US$495 for pre-order; it was later sold for $595 including the controller card and cable. The Disk II was designed specifically for use with the [[Apple II]] personal computer family to replace the slower cassette tape storage.

The first drives sold were built using parts from Shugart Drives, but to reduce costs Apple switched to Alps Electric Co. of Japan who built them for half the cost. Early production at Apple was handled by two people, and they produced about thirty drives a day. <ref>"A.P.P.L.E. Co-op Celebrates A Decade of Service", ''[[Call-A.P.P.L.E.]]'', Feb 1988: 12-27.</ref> <ref> "Apple and Apple II History", ''The Apple II Guide'', Cupertino, CA, Apple Computer, Inc., Fall 1990: 9-16.</ref>

Normal storage capacity per disk side was 114KB with DOS 3.2.1 and earlier (13 256-byte sectors per track, 35 tracks per side), or 140KB with DOS 3.3 and the accompanying firmware update for the controller card (16 sectors/track). A Bell & Howell version of the Disk II was also manufactured by Apple in a black case which matched the color of the Bell & Howell version of the Apple II Plus which Apple was already manufacturing. Apple later modernized the appearance of the Disk II to better match the [[Apple IIe]] case, and also offered a combination of two Disk II drives in a single unit, called the [[DuoDisk]].

== References ==
<references/>

== See also ==
* [[List of products discontinued by Apple Computer]]

== External links ==
* [http://apple2history.org/history/ah05.html Apple II History - Chapter 5 (Disk II)]
* [http://www.myoldcomputers.com/museum/perif/adiskii.htm Apple Floppy Disk II]
* [http://www.mandrake.demon.co.uk/Apple/drives.html Apple Floppy Drives]
* [http://www.doc.ic.ac.uk/~ih/doc/stepper/others/example3/diskii_specs.html Disk II programming example]
* [http://www.apple2.org.za/mirrors/ground.icaen.uiowa.edu/Mirrors/uni-kl/hardware/diskIIcontroller_hardware Disk II Controller hardware article]
* [http://home.swbell.net/rubywand/Csa2DSKETTE.html Apple II Diskette FAQ] and [http://home.swbell.net/rubywand/Csa2FDRIVE.html Apple II Drive FAQ] at comp.sys.apple2 FAQ mirror

← Older revision		Revision as of 00:09, 17 December 2018
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 | capacity = 114 KiB (pre-DOS 3.3), 140 KiB (DOS 3.3)
 | year introduced = 1978
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-The '''Disk II''' was a 5¼-inch floppy disk drive designed by Steve Wozniak and manufactured by [[Apple Computer]]. It was first introduced in 1978 at a retail price of US$495 for pre-order; it was later sold for $595 including the controller card and cable. The Disk II was designed specifically for use with the [[Apple II]] personal computer family to replace the slower cassette tape storage.
+The '''Disk II''' was a 5¼-inch [[floppy disk]] [[drive]] designed by Steve Wozniak and manufactured by [[Apple Computer]]. It was first introduced in 1978 at a retail price of US$495 for pre-order; it was later sold for $595 including the [[controller]] card and cable. The Disk II was designed specifically for use with the [[Apple II]] personal computer family to replace the slower cassette tape storage.
 The first drives sold were built using parts from Shugart Drives, but to reduce costs Apple switched to Alps Electric Co. of Japan who built them for half the cost. Early production at Apple was handled by two people, and they produced about thirty drives a day.
-Normal storage capacity per disk side was 114KB with DOS 3.2.1 and earlier (13 256-byte sectors per track, 35 tracks per side), or 140KB with DOS 3.3 and the accompanying firmware update for the controller card (16 sectors/track). A Bell & Howell version of the Disk II was also manufactured by Apple in a black case which matched the color of the Bell & Howell version of the Apple II Plus which Apple was already manufacturing. Apple later modernized the appearance of the Disk II to better match the [[Apple IIe]] case, and also offered a combination of two Disk II drives in a single unit, called the [[DuoDisk]].
+Normal storage capacity per disk side was 114KB with DOS 3.2.1 and earlier (13 256-byte sectors per track, 35 tracks per side), or 140KB with DOS 3.3 and the accompanying [[firmware]] update for the controller card (16 sectors/track). A Bell & Howell version of the Disk II was also manufactured by Apple in a black case which matched the color of the Bell & Howell version of the Apple II Plus which Apple was already manufacturing. Apple later modernized the appearance of the Disk II to better match the [[Apple IIe]] case, and also offered a combination of two Disk II drives in a single unit, called the [[DuoDisk]].
 == See also ==
@@ Line 28: / Line 27: @@
 * [http://www.apple2.org.za/mirrors/ground.icaen.uiowa.edu/Mirrors/uni-kl/hardware/diskIIcontroller_hardware Disk II Controller hardware article]
 * [http://home.swbell.net/rubywand/Csa2DSKETTE.html Apple II Diskette FAQ] and [http://home.swbell.net/rubywand/Csa2FDRIVE.html Apple II Drive FAQ] at comp.sys.apple2 FAQ mirror

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 {{wp-orig}}
 {{Infobox Disk drive
@@ Line 6: / Line 5: @@
 | manufacturer = [[Apple]]
 | capacity = 114 KiB (pre-DOS 3.3), 140 KiB (DOS 3.3)
+| year introduced = 1978
 The '''Disk II''' was a 5¼-inch floppy disk drive designed by Steve Wozniak and manufactured by [[Apple Computer]]. It was first introduced in 1978 at a retail price of US$495 for pre-order; it was later sold for $595 including the controller card and cable. The Disk II was designed specifically for use with the [[Apple II]] personal computer family to replace the slower cassette tape storage.