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- DumbDrv
- Dummy DOS Device Driver
- Copyright (C) 1994-1996 Marcus Better
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- Version 1.10
- January 3, 1996
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- What is DumbDrv?
- ================
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- DumbDrv is a device driver which creates a null block device - a
- device that does absolutely nothing, except for occupying one or more
- drive letters. This can be useful if one wants to reserve a drive
- letter at boot time, so that another driver can use that drive letter.
- The KillDrv utility may be used to delete a DumbDrv device.
-
- Here's an example where DumbDrv is useful: Let's say we have a hard
- disk called C:, a CD-ROM drive (accessed by MSCDEX.EXE), and a ramdisk
- created by RAMDRIVE.SYS. We now want the CD-ROM drive to be D: and
- the ramdisk E:. Since RAMDRIVE.SYS is loaded before MSCDEX.EXE, the
- ramdisk will automatically become D:, though. This is where DumbDrv
- comes in. By loading DUMBDRV.SYS just before RAMDRIVE.SYS, we reserve
- the drive letter D:, forcing the ramdisk to become E:. We can then
- delete the DumbDrv using the KillDrv utility, and load MSCDEX as D:
- instead.
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- License
- =======
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- DumbDrv is free software, and is distributed under the GNU General
- Public License. Please see the file COPYING for details.
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- Installation
- ============
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- DumbDrv is installed by entering the line
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- DEVICE=d:\path\DUMBDRV.SYS
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- in your CONFIG.SYS file. The driver will be loaded the next time you
- boot your computer. DumbDrv will display a message saying what drive
- letters it occupies.
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- You may also specify the number of drive letters you want to reserve.
- To reserve three drives, use the line
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- DEVICE=d:\path\DUMBDRV.SYS 3
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- in your CONFIG.SYS. If you do not specify a number, the default value
- is 1. If you specify a number higher than the number of available
- drive letters, DumbDrv will use all available drives.
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- NOTE: Drive letters are assigned to block device drivers sequentially
- in the order they are loaded in CONFIG.SYS.
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- Contacting the author
- =====================
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- You are welcome send me any ideas, comments and suggestions for
- DumbDrv. If you have found any bugs, please let me know. My email
- address is
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- Marcus.Better@abc.se
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