Many of those that used MS-DOS in its heyday, would remember spending time on these two files – AUTOEXEC.BAT and CONFIG.SYS to optimise and configure their PC as needed. Sometimes careful placement of commands were needed to maximise the 640 KB of conventional memory to avoid “out of memory” errors for Windows applications and games. When you knew you had overall 8 or 16 of MB RAM in those days thinking you had plenty, let’s just say it had its moments of frustration due to TSR (Terminate and Stay Resident) programs and so forth.
Fortunately we don’t need to worry about now, but I think the flip side to that was that it felt like an accomplishment when you had your PC well configured at a time when using a computer wasn’t common knowledge like it is today and with ever increasing automation.
For those running MS-DOS in some form, this is a quick reference guide to both of these files, and what many of the more common commands meant. Usually on Drive C or boot floppy disks, both of these files are located on your start up disk at the root directory (i.e. at A:\> or C:\>).