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Contents

Overview

Modifying System Settings

What is Actually Happening


Overview

The Configuration Manager will allow you to modify the computer's system files (config.sys and autoexec.bat) so you don't have to.  It does this by evaluating your config.sys and autoexec.bat and determining what the CD-ROM reader was configured and therfore displaying it upon execution of the Configuration Manager.  You can then modify these settings and the Configuration Manger will change them accordingly.


Modifying System Settings

The options that are listed in the Configuration Manager are what is currently set up for your CD-ROM reader.  Any changes that you need to make will be made when you select Modify Startup Files.

Use Expanded Memory if Available

If this option is selected, the system will try to load a portion of MSCDEX into expanded memory.  If you do not have an Expanded Memory Manager loaded in your system or you are using the option "NOEMS" on the Expanded Memory Manger driver line, selecting this will not change your memory configuration.

Number of Buffers to Allocate

Each buffer is equal to 2 KB of RAM from your conventional memory.  The larger the number, the faster your CD-ROM reader will be.  Setting the buffer size to large will reduce the total amount of memory available to run applications.  A size less than 10 will start reducing the overall performance of the reader.

Driver Name

The Driver Name is any alphanumeric combination to tell MSCDEX what driver is the CD-ROM driver.  It uses this to communicate with the reader. The default name is "NECCD" but you can modify this to anything else such as "I_LOVE_MY_NEC".

CD-ROM Drive Letter

This is the drive letter than you want your CD-ROM reader to be.  For example, your hard drive is usually "C".  It doesn't matter what the drive letter is.  It's a matter of personal preference.

Last Drive Letter

The Last Drive Letter is exactly was is says.  If the last drive letter was set to "M", MS-DOS would not recognize any drive letter after "M".  Therefore, make sure that the Last Drive Letter is at least equal to the CD-ROM Drive Letter.


What is Actually Happening

When you select "Modify Startup Files", the Configuration Manager will search the config.sys for the prior driver name and modify it to the new one.  It will also change the lastdrive statement to current one selected.

It will then modify the Autoexec.bat files by searching for the MSCDEX line and will modify all of the parameters specified by the Configuration Manger.

The Configuration Manger will bypass lines that are REM'ed out and will keep the devicehigh and LH (load high) statements.