Drivers

• The first place to look for DOS drivers is on the CD drive manufacturer's website. This will ensure maximum compatibility and functionality. Alternatively, there are free generic CD drive drivers available for download on the Internet. The driver will typically be a single file that ends with a ".sys" extension. Copy this file to a location on the DOS computer's hard drive. A file called "mscdex.exe" is also required. This file can be downloaded from a CD drive manufacturer's website, if it is not already on the DOS computer's hard drive.
  
  

Boot Files

• The two boot files that must be edited are "autoexec.bat" and "config.sys." Assuming that the driver file and "mscdex.exe" file are both located in the root of the "C" drive, insert a single line in "autoexec.bat" that reads, "LOADHIGH=C:\mscdex.exe /D:MSCD001" and a line in "config.sys" stating, "DEVICEHIGH=C:\<driverfile> /D:MSCD001." Replace "<driverfile> with the name of the CD drive driver file. Adjust the paths to the files as required.
  
  

Warnings

• Syntax is important in the two boot file lines. Ensure that spaces between characters only exist as provided in the examples. Ensure that there is a line in "config.sys" that reads, "LASTDRIVE=Z" to avoid drive lettering problems. These instructions will only work if the memory manager files "emm386.exe" and "himem.sys" are also loaded by the boot files.