IFS = (CONFIG.SYS Command)

An FSD is loaded and initialized at system start-up when an IFS= statement 
is encountered in CONFIG.SYS. The syntax of this command is as follows: 

IFS=drive:path\name.ext parms

where   
drive:path\name.ext specifies the FSD to load and initialize. 
parms represents an FSD-defined string of initialization parameters. 
  

See the OS/2 Version 2.0 Online Command Reference for a detailed 
description of this command.