| DRIVPARM |
|
| Defines parameters for devices such as disk and tape drives when you start |
| MS-DOS. You can use this command only in your CONFIG.SYS file. |
|
| The DRIVPARM command modifies the parameters of an existing physical drive. |
| It does not create a new logical drive. The settings specified in the |
| DRIVPARM command override the driver definitions for any previous block |
| device. |
|
| Syntax |
|
| DRIVPARM=/D:number [/C] [/F:factor] [/H:heads] [/I] [/N] [/S:sectors] |
| [/T:tracks] |
|
| Switches |
|
| /D:number |
| Specifies the physical drive number. Values for number must be in the |
| range 0 through 255 (for example, drive number 0 = drive A, 1 = drive B, |
| 2 = drive C, and so on). |
|
| /C |
| Specifies that the drive can detect whether the drive door is closed. |
|
| /F:factor |
| Specifies the drive type. The following list shows the valid values for |
| factor and a brief description of each. The default value is 2. |
|
| 0 |
| 160K/180K or 320K/360K |
|
| 1 |
| 1.2 megabyte (MB) |
|
| 2 |
| 720K (3.5-inch disk) |
|
| 5 |
| Hard disk |
|
| 6 |
| Tape |
|
| 7 |
| 1.44 MB (3.5-inch disk) |
|
| 8 |
| Read/write optical disk |
|
| 9 |
| 2.88 MB (3.5-inch disk) |
|
| /H:heads |
| Specifies the maximum number of heads. Values for heads must be in the |
| range 1 through 99. The default value depends upon the value you specify |
| for /F:factor. |
|
| /I |
| Specifies an electronically compatible 3.5-inch floppy disk drive. |
| (Electronically compatible drives are installed on your computer and use |
| your existing floppy-disk-drive controller.) Use the /I switch if your |
| computer's ROM BIOS does not support 3.5-inch floppy disk drives. |
|
| /N |
| Specifies a non-removable block device. |
|
| /S:sectors |
| Specifies the number of sectors per track that the block device |
| supports. Values for sectors must be in the range 1 through 99. The |
| default value depends upon the value you specify for /F:factor. |
|
| /T:tracks |
| Specifies the number of tracks per side that the block device supports. |
| The default value depends upon the value you specify for /F:factor. |
|
|
| DRIVPARM--Notes |
|
| Using the /I switch |
|
| Use the /I switch if your system does not support 3.5-inch floppy disk |
| drives. (Some IBM PC/AT-compatible systems do not have a ROM BIOS that |
| supports 3.5-inch floppy disk drives.) |
|
| Disk drive change-line support |
|
| Change-line support means that a physical disk drive can detect whether the |
| drive door is opened and closed. Change-line support improves performance by |
| letting MS-DOS know when one floppy disk has been replaced by another. The |
| /C switch allows MS-DOS to make use of change-line support. To find out |
| whether your disk drive has change-line support, see your disk-drive |
| documentation. |
|
| Creating a logical drive |
|
| DRIVPARM modifies the parameters of an existing physical drive and does not |
| create a new logical drive. |
|
|
| DRIVPARM--Example |
|
| Suppose your system has an internal tape drive with one head on drive D that |
| is configured at startup to write 20 tracks of 40 sectors per track. To |
| reconfigure this tape drive to write 10 tracks of 99 sectors each, add the |
| following command to your CONFIG.SYS file: |
|
| drivparm=/d:3 /f:6 /h:1 /s:99 /t:10 |
|
|
