🚀 go-pugleaf

In <1993Jan19.220908.2500@ucbeh.san.uc.edu> quinlijj@ucbeh.san.uc.edu writes:

>Double buffering is used on SCSI, ESDI and other hard disks to run SMARTDRV
>correctly.  These hard drive do not understand the difference between virtual
>memory addresses and actual memory address.  Sometimes the wrong part of memory
>gets overwritten and crashes the system. to install doublebuffering add this
>line to your config.sys

>DEVICE=C:\WINDOWS\SMARTDRV.EXE /DOUBLEBUFFER

>To see if you need double buffering at a DOS prompt type SMARTDRV.  The last
>column shows if double buffering is needed or not.

I agree.
 
> If SmartDrive is unsure its
>a good idea to install in anyway.

I disagree. Trying it on my SCSI drive, the start-up time of windows
doubles with double buffering installed. And this also reflects on all
the other disk access. Though I do not have a 486/33, I would rather
just try it without double buffering before hampering my system.

I also had the rather interesting effect that installing smartdrv in
the config.sys resulted in installation of double buffering,
independent of setting the option.
Only installation of smartdrv on the command line prompt (or in
autoexec.bat) allowed me actually to choose between having
double buffering or not having it.
Any smart ideas why?

                                                   Harald


Harald Geiger
hgg@ecs.soton.ac.uk