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- FCBS=x,y
-
- This line allows DOS to support file control blocks (FCB). Very early versions
- of DOS controlled file access with FCBs. Later versions use file handles,
- instead. New programs use file handles, but some older ones still use FCBs, so
- DOS still supports their use. They are also used to control file sharing in a
- network.
-
- x specifies the number of FCBS, minimum of 1, maximum of 255 (default 4).
-
- y specifies the number of FCBS that CANNOT be closed by DOS unless a program
- running on your computer requests their closure. This prevents a program
- on another computer in a network (enabled by the SHARE command) from
- closing a file you want to remain open.
-
- x should be > than y by 8 or more. If you set x ≤ y, DOS probably won't run on
- a network at all. If an old program using FCBs is run on a computer which uses
- DOS 4.0 or later and a disk partition of ≥ 32 Mbytes (32 million characters),
- the SHARE command must be executed before using the program, or it won't work.