Microsoft DOS drivparm command

Updated: 05/21/2018 by Computer Hope

About drivparm

Drivparm allows the default or original device driver settings to be overridden when the config.sys is loaded.


The drivparm command is an internal command that is available in the below Microsoft operating systems.

Drivparm syntax

DRIVPARM=/d:number /c /f:factor /h:heads /i /n /s:sectors /t:tracks

/d:number Specifies physical drive number. Numbers must be in the range
of 0 to 255.
/c Specifies that the driver will be able to tell that the floppy disk
drive door is open.
/f:factor Specifies drive. Default value is 2.
0 - 160 K/180 K or 320 K/360 K
1 - 1.2 megabyte
2 - 720 K (3.5" disk)
5 - Hard disk
6 - Tape
7 - 1.44 MB (3.5" disk)
8 - Read/write optical disk
9 - 2.88 MB (3.5" disk)
/h:heads Specifies the maximum number of heads.
/i Specifies an electronically-compatible 3.5" floppy drive.
/n Non-removable block device.
/s:sectors Number of sectors per track, ranging in value from 1 to 99.
/t:tracks Number of tracks per side on the block device, ranging from 1 to 999. Default values will vary depending on the factor selected.

Drivparm examples

drivparm=/d:1 /c /h:2 /s:9 /t:80

Configures a 3.5" 720 K floppy drive. This line would be loaded in the config.sys.