DumbDrv
(ver 1.10)
Abandoned Freeware
----------
KillDrv
(ver 1.01)
Abandoned Freeware


DumbDrv is a device driver which creates a null block device 
(a drive that does absolutely nothing, except for occupying 
a drive letter).  This can be useful if one wants to reserve 
a higher drive letter while booting Config.sys, so that 
another driver further down the boot chain can get a higher 
drive letter than which it would normally have access to.  

The KillDrv utility will delete a DumbDrv, so that another 
device can use the freed-up drive letter.  


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Here's an example => 
=================

Let's say we have a hard disk called C:, a CD-ROM drive 
(accessed with MSCDEX.EXE), and a ramdisk created by RAMDRIVE.SYS. 

We now want the CD-ROM drive to be D: and the ramdisk E:. 

However, since RAMDRIVE.SYS is loaded before MSCDEX.EXE, the 
ramdisk will automatically get the higher drive letter of D:.  

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 then load MSCDEX as drive letter D: instead.