JPS6479975A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS6479975A
JPS6479975A JP23768387A JP23768387A JPS6479975A JP S6479975 A JPS6479975 A JP S6479975A JP 23768387 A JP23768387 A JP 23768387A JP 23768387 A JP23768387 A JP 23768387A JP S6479975 A JPS6479975 A JP S6479975A
Authority
JP
Japan
Prior art keywords
record
flag
records
read out
final
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
JP23768387A
Other languages
Japanese (ja)
Inventor
Hideo Asada
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP23768387A priority Critical patent/JPS6479975A/en
Publication of JPS6479975A publication Critical patent/JPS6479975A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To correctly read out data from a data track by adding a flag capable of discriminating other records than the final record to the final record of the records to be written in a series of format operations. CONSTITUTION:In a write format of the titled magnetic disk device, a home address exists immediately after an index mark, and a record exists after the home address. A count part of the record consists of a bit of defective information 11, a bit of address information 12, a record number 13, a record length 14 and a final record flag 15. As to the flag 15, [FF] is written in case of the final record, and [00] in case of other records. When all records are read out, the read is carried out by confirming the flag 15 of the count part of the record to be read out by a host device. By this method, even when the count part is unable to be read out, if the flag 15 is [00], a record exists, thus showing the occurrence of a read error, and if it is [FF], no record is determined to exist.
JP23768387A 1987-09-21 1987-09-21 Magnetic disk device Pending JPS6479975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23768387A JPS6479975A (en) 1987-09-21 1987-09-21 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23768387A JPS6479975A (en) 1987-09-21 1987-09-21 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPS6479975A true JPS6479975A (en) 1989-03-24

Family

ID=17018961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23768387A Pending JPS6479975A (en) 1987-09-21 1987-09-21 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPS6479975A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5194109A (en) * 1988-11-14 1993-03-16 Idemitsu Petrochemical Co., Ltd. Method for recovering scraps of multi-layer plastic sheet or film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5194109A (en) * 1988-11-14 1993-03-16 Idemitsu Petrochemical Co., Ltd. Method for recovering scraps of multi-layer plastic sheet or film

Similar Documents

Publication Publication Date Title
DE3884875T2 (en) Mechanism for skipping errors on disk devices.
EP0212099A3 (en) Sector identification method for hard sectored hard files
HK169096A (en) Method of and device for recording data signals on a record carrier of an inscribable type
MY105839A (en) Combining small records into a single record block for recording on a record media.
YU157391A (en) A RECORDER WHERE THE MAIN FILE AND THE CONTROL FILE WERE RECORDED, THE METHOD AND DEVICE FOR RECORDING THE MAIN FILE AND THE CONTROL FILE AND THE FILE READER
CA2064511A1 (en) Method and device for recording information volumes in a track of a record carrier, and a device for reading the record carrier thus obtained
ES466291A1 (en) Segmented storage logging and controlling
EP0321941A3 (en) Process for identifying disks and automatically configuring a disk drive system
EP0179299A3 (en) Digital alignment diagnostic disk
DE3584185D1 (en) MAGNETIC DISK PLAYER.
EP0349687A3 (en) Method and apparatus for encoding magnetic disk sector addresses
KR920018733A (en) Data recording and playback device
JPS6479975A (en) Magnetic disk device
WO1988004825A1 (en) Address mark encoding for a record storage medium
JPS5841578B2 (en) Control method for rotating storage device
JPS6414776A (en) Method for processing defective sector in optical data recording/reproducing device
JPS5641513A (en) Data recording system
JPS57143705A (en) Faulty sector processing method of magnetic disk medium
KR830001404B1 (en) Control Method of Rotating Memory
JPS5687274A (en) Data recording and reproducing system of magnetic recorder and reproducer
JPS6467766A (en) Magnetic disk device
JPS6462868A (en) Magnetic disk device
JPS6437772A (en) System for positioning of magnetic head
JPS6419561A (en) Optical disk
JPS5769354A (en) Data base access system