WIN.INI contains a number of sections which may be customized by the user, including which applications should be started or run when a Windows MAVDM is started. Each Windows application is recorded in a separate section indicating the drive and path to execute the application. The supported file extensions, for each application installed, are recorded in the Extensions section.
Users need to be careful when applying any changes to this file, especially when it comes to configuring of any device drivers. The user might install a device driver which either does not exist or is not supported under OS/2 V2.0, such as specialized video device drivers.
Most, but not all, Windows applications also have their private entries in the WIN.INI file. Usually, such entries consist merely of a pointer to the application's own working directory. However, some applications register all their installation-dependent configuration information, and may therefore be very dependent upon finding their data in this file. The migration process will take care of these entries and migrate them appropriately.