JPS54146617A - Method of dividing magnetic disc surface - Google Patents

Method of dividing magnetic disc surface

Info

Publication number
JPS54146617A
JPS54146617A JP5407778A JP5407778A JPS54146617A JP S54146617 A JPS54146617 A JP S54146617A JP 5407778 A JP5407778 A JP 5407778A JP 5407778 A JP5407778 A JP 5407778A JP S54146617 A JPS54146617 A JP S54146617A
Authority
JP
Japan
Prior art keywords
cylinders
magnetic discs
disc
capacity
discs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5407778A
Other languages
Japanese (ja)
Inventor
Masao Suga
Akira Tokunaga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5407778A priority Critical patent/JPS54146617A/en
Publication of JPS54146617A publication Critical patent/JPS54146617A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To replace a plurality of magnetic discs with little capacity with a small number of magnetic discs with great capacity, by dividing the data ranges of the surfaces of the magnetic discs with great capacity and cylinders in substitute tracks in response to the cylinders of the magnetic discs with little capacity.
CONSTITUTION: When replacing four magnetic discs (Units 0W3) with 2.4M bite with one magnetic disc with 10.1M bite, 75 cylinders until cylinders 0W74 correspond to the unit 0 (200 cylinders of cylinders 0W199) of a disc (24 sector/track). The same is the case units 1W3. Concerning substitute tracks, the substitute tracks (Three cylinders of cylinders 200W203) of the units 0W3 of the disc are let correspond to five cylinders of the cylinders 310W314 of the disc. Thus, a plurality of magnetic discs with little capacity can be replaced with a small number of discs with great capacity.
COPYRIGHT: (C)1979,JPO&Japio
JP5407778A 1978-05-09 1978-05-09 Method of dividing magnetic disc surface Pending JPS54146617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5407778A JPS54146617A (en) 1978-05-09 1978-05-09 Method of dividing magnetic disc surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5407778A JPS54146617A (en) 1978-05-09 1978-05-09 Method of dividing magnetic disc surface

Publications (1)

Publication Number Publication Date
JPS54146617A true JPS54146617A (en) 1979-11-16

Family

ID=12960545

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5407778A Pending JPS54146617A (en) 1978-05-09 1978-05-09 Method of dividing magnetic disc surface

Country Status (1)

Country Link
JP (1) JPS54146617A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6631106B1 (en) 1998-07-21 2003-10-07 Fujitsu Limited Spare area with a predetermined capacity for a detective sector allocated in each zone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6631106B1 (en) 1998-07-21 2003-10-07 Fujitsu Limited Spare area with a predetermined capacity for a detective sector allocated in each zone

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