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Configuring kernel parameters

I/O parameters

Parameter Dflt Min Max
MAXMAJOR 0x1FFF 0x7F 0x1FFF
MAXMINOR 0x3FFFF 0xFF 0x3FFFF
FDRDTRK 1 0 1
FD_DOOR_SENSE 1 0 1


MAXMAJOR
Maximum valid major device number. This parameter limits the maximum major number that a device node created by the mknod(S-osr5) system call can have. Although the system now allows major numbers up to ``0x1FFF'', this parameter can be set to a smaller value for compatibility reasons.

MAXMINOR
Maximum valid minor device number. This parameter limits the maximum minor number that a device node created by the mknod(S-osr5) system call can have. Although the system now allows minor numbers up to ``0x3FFFF'', this parameter is limited to ``255'' for compatibility reasons.

FDRDTRK
Enable (1) or disable (0) track buffer reads.

FD_DOOR_SENSE
Specifies whether the floppy disk driver uses the Disk Change Signal. The Disk Change Signal indicates whether the door of the diskette drive has been opened. For systems that do not provide this signal, the floppy disk driver will not function properly unless this parameter is set to ``0''. That is, when the parameter is set to ``0'' or false, the driver does not use the signal and this allows the driver to work on non-standard systems that do not provide the signal. The default setting is ``1'' or ``true'' to preserve the designed system behavior.

Asynchronous I/O parameters

Parameter Dflt Min Max
AIO_LISTIO_MAX 128 32 32768
NUMAIO 256 32 32768


AIO_LISTIO_MAX
Maximum size of list I/O requests.

NUMAIO
Number of Asynchronous I/O Control Blocks.

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© 2007 The SCO Group, Inc. All rights reserved.
SCO OpenServer Release 6.0.0 -- 05 June 2007