< operating system > A text file containing special system configuration commands. It is found in the root directory on an MS-DOS computer, typically on drive C (the hard disk ). It is read by MS-DOS at boot time , after the setup has been read from CMOS RAM and before running AUTOEXEC.BAT . It can be modified by the user.
Some example commands which CONFIG.SYS might contain are:
DEVICE=C:\DOS\HIMEM.SYS /testmem:off
Load the extended memory manager.
DEVICE=C:\DOS\EMM386.EXE RAM
Load the expanded memory manager.
BUFFERS=10,0
Specify memory for disk buffer s.
FILES=70
Set the number of files that can be open at once.
DOS=UMB
DOS is located in UppeMemoryBlock .
LASTDRIVE=Z
Disk drives are A: to Z:.
FCBS=16,0
Set the number of file control block s.
DEVICEHIGH /L:1,12048 =C:\DOS\SETVER.EXE
Report the DOS version to older programs.
DOS=HIGH
DOS should maintain a link to UMB .
COUNTRY=358,437 C:\DOS\COUNTRY.SYS
Set the country code for some programs.
STACKS=9,256
Set dynamic stack s for hardware control.
SHELL=C:\DOS\COMMAND.COM C:\DOS\ /E:1024 /p
Set the location of the command interpreter .
(1995-03-16)