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Switches
Device Drivers



DRIVER.SYS

Creates a logical drive that you can use to refer to a physical floppy disk drive. This device driver must be loaded by a <DEVICE> or <DEVICEHIGH> command in your CONFIG.SYS file. A logical drive is a pointer to a physical disk drive in your system. The logical drive is associated with a drive letter (for example, A or B). You can specify parameters to describe the disk drive to MS-DOS. Syntax DEVICE=[drive:][path]DRIVER.SYS /D:number [/C] [/F:factor] [/H:heads] [/S:sectors] [/T:tracks] Parameter [drive:][path] Specifies the location of the DRIVER.SYS file. Switches /D:number Specifies the number of the physical floppy disk drive. Valid values for number are in the range 0 through 127. The first physical floppy disk drive (drive A) is drive 0; a second physical floppy disk drive is drive 1; a third physical floppy disk drive, which must be external, is drive 2. For a computer with one floppy disk drive, drives A and B are both numbered 0; for a computer with multiple floppy disk drives, drive B is numbered 1. /C Specifies that the physical disk drive can detect whether the drive door is closed (change-line support). /F:factor Specifies the type of disk drive. Valid values for factor are as follows: 0 160K/180K or 320K/360K 1 1.2 megabyte (MB) 2 720K (3.5-inch disk) or other 7 1.44 MB (3.5-inch disk) 9 2.88 MB (3.5-inch disk) The default value for factor is 2. Generally, if you use the /F switch, you can omit the /H, /S, and /T switches. Check the default values for these switches to make sure they are correct for the type of disk drive you are using. To determine the appropriate values for the disk drive, see the disk-drive manufacturer's documentation. If you specify the /H, /S, and /T switches, you can omit the /F switch. /H:heads Specifies the number of heads in the disk drive. Valid values for heads are in the range 1 through 99. The default value is 2. To determine the correct value for your disk drive, see the disk-drive manufacturer's documentation. /S:sectors Specifies the number of sectors per track. Valid values for sectors are in the range 1 through 99. The default value depends on the value of /F:factor, as follows: /F:0 /S:9 /F:1 /S:15 /F:2 /S:9 /F:7 /S:18 /F:9 /S:36 To determine the correct value for your disk drive, see the disk-drive manufacturer's documentation. /T:tracks Specifies the number of tracks per side on the block device. Valid values for tracks are in the range 1 through 999. The default value is 80, unless /F:factor is 0, in which case the default value is 40. To determine the correct value for your disk drive, see the disk-drive manufacturer's documentation.
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