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- File_Control_Block abstract "A File Control Block (FCB) is a file system structure in which the state of an open file is maintained. An FCB is managed by the operating system, but it resides in the memory of the program that uses the file, not in operating system memory. This allows a process to have as many files open at one time as it wants to, provided it can spare enough memory for an FCB per file.The FCB originates from CP/M and is also present in most variants of DOS, though only as a backwards compatibility measure in MS-DOS versions 2.0 and later. A full FCB is 36 bytes long; in early versions of CP/M, it was 33 bytes. This fixed size, which could not be increased without breaking application compatibility, lead to the FCB's eventual demise as the standard method of accessing files.The meanings of several of the fields in the FCB differ between CP/M and DOS, and also depending on what operation is being performed. The following fields have consistent meanings:".
- File_Control_Block wikiPageExternalLink c247i.
- File_Control_Block wikiPageExternalLink rb-2574.htm.
- File_Control_Block wikiPageID "1269014".
- File_Control_Block wikiPageRevisionID "606432416".
- File_Control_Block subject M_technology.
- File_Control_Block subject Category:DOS_technology.
- File_Control_Block subject Category:Disk_file_systems.
- File_Control_Block comment "A File Control Block (FCB) is a file system structure in which the state of an open file is maintained. An FCB is managed by the operating system, but it resides in the memory of the program that uses the file, not in operating system memory.".
- File_Control_Block label "File Control Block".
- File_Control_Block label "File Control Block".
- File_Control_Block label "File control block".
- File_Control_Block sameAs File_Control_Block.
- File_Control_Block sameAs File_control_block.
- File_Control_Block sameAs m.04nsck.
- File_Control_Block sameAs Q1412592.
- File_Control_Block sameAs Q1412592.
- File_Control_Block wasDerivedFrom File_Control_Block?oldid=606432416.
- File_Control_Block isPrimaryTopicOf File_Control_Block.