JPS647138A - File access control system - Google Patents

File access control system

Info

Publication number
JPS647138A
JPS647138A JP62136282A JP13628287A JPS647138A JP S647138 A JPS647138 A JP S647138A JP 62136282 A JP62136282 A JP 62136282A JP 13628287 A JP13628287 A JP 13628287A JP S647138 A JPS647138 A JP S647138A
Authority
JP
Japan
Prior art keywords
dos
japanese
english
access
peculiar
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.)
Granted
Application number
JP62136282A
Other languages
Japanese (ja)
Other versions
JP2645015B2 (en
Inventor
Masaji Wada
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
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 filed Critical Toshiba Corp
Priority to JP62136282A priority Critical patent/JP2645015B2/en
Publication of JPS647138A publication Critical patent/JPS647138A/en
Application granted granted Critical
Publication of JP2645015B2 publication Critical patent/JP2645015B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Stored Programmes (AREA)

Abstract

PURPOSE:To make access to a file controlled by a standard OS, by enabling access to a partition peculiar to an extended OS and that peculiar to the standard OS at the time of leading the extended OS. CONSTITUTION:For the purpose of realizing dual personality, the English MS- DOS and the Japanese MS-DOS are stored in different partitions on one hard disk device (HDD). In the operation mode due to the leading edge of the Japanese MS-DOS, a Japanese address conversion table (concretely, respective file allocation tables (FAT) of the Japanese MS-DOS and the English-MS-DOS and respective partition information of a management table are referred) is used to perform logical physical address conversion. Thus, files in data areas controlled by the Japanese MS-DOS and the English MS-DOS can be made access.
JP62136282A 1986-10-28 1987-05-30 Computer system Expired - Lifetime JP2645015B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62136282A JP2645015B2 (en) 1986-10-28 1987-05-30 Computer system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP61-255240 1986-10-28
JP25524086 1986-10-28
JP62136282A JP2645015B2 (en) 1986-10-28 1987-05-30 Computer system

Publications (2)

Publication Number Publication Date
JPS647138A true JPS647138A (en) 1989-01-11
JP2645015B2 JP2645015B2 (en) 1997-08-25

Family

ID=26469914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62136282A Expired - Lifetime JP2645015B2 (en) 1986-10-28 1987-05-30 Computer system

Country Status (1)

Country Link
JP (1) JP2645015B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04157672A (en) * 1990-10-22 1992-05-29 Matsushita Electric Ind Co Ltd Information medium exclusive to playback and information playback medium
US6186491B1 (en) 1998-10-02 2001-02-13 Nec Corporation Sheet feeding apparatus
WO2007018328A1 (en) * 2005-08-05 2007-02-15 Gq Soft Co., Ltd. Method for platform-free file compression and file security in cellular phone
JP2008063091A (en) * 2006-09-07 2008-03-21 Seiko Epson Corp Recording material feeding apparatus, recording apparatus, and liquid ejecting apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61143858A (en) * 1984-12-18 1986-07-01 Hitachi Ltd How to share files under multiple operating systems
JPS61190638A (en) * 1985-02-20 1986-08-25 Hitachi Ltd File control system for virtual computer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61143858A (en) * 1984-12-18 1986-07-01 Hitachi Ltd How to share files under multiple operating systems
JPS61190638A (en) * 1985-02-20 1986-08-25 Hitachi Ltd File control system for virtual computer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04157672A (en) * 1990-10-22 1992-05-29 Matsushita Electric Ind Co Ltd Information medium exclusive to playback and information playback medium
US6186491B1 (en) 1998-10-02 2001-02-13 Nec Corporation Sheet feeding apparatus
WO2007018328A1 (en) * 2005-08-05 2007-02-15 Gq Soft Co., Ltd. Method for platform-free file compression and file security in cellular phone
JP2008063091A (en) * 2006-09-07 2008-03-21 Seiko Epson Corp Recording material feeding apparatus, recording apparatus, and liquid ejecting apparatus

Also Published As

Publication number Publication date
JP2645015B2 (en) 1997-08-25

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