- MS-DOS got its configuration data from Config.sys and Autoexec.bat.
- Config.sys loads device drivers
- Autoexec.bat used to run programs, set environment variables, and prepare MS-DOS for use.
- Windows 3.0 provided INI files for storing settings.
- INI files are text files that contain one or more sections with one or more settings in each section.
- The main problems with INI files are that they provide no hierarchy, storing binary values in them is cumbersome, and they provide no standard for storing similar types of settings.
- INI files also cause other subtle problems, all related to the configuration file's inability to build complex relationships between applications and the operating system.
- One big problem for early versions of Windows was the sheer number of INI files that floated around on the average computer. Every application had its own INI files.
Windows 3.1 introduced the registry as a tool for storing OLE (object linking and embedding) settings.
Windows 95
- Windows 95 expanded the registry into the configuration database that Windows XP and Windows Server 2003 use now.
- Even though INI files are no longer necessary, you'll always find INI files, including Win.ini, on any computer, at location : C:\WINDOWS\win.ini
- No more plain text .INI files splattered all over your system.
- In today's environment, the registry replaces these .INI files. Each key in the registry is similar to bracketed headings in an .INI file.
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