I am trying to build a multi boot DVD with DOS 7.1, Win98SE, and Xp Pro SP2 per flyakite's guide. I have read all the guide plus GOSH's guide and thread, plus various posts and threads here at MSFN. The Problem: the XP segment works perfect using either cdshell or diskemu, but win 98 stops at: Now installing Win98 SE loading... bad command or file name and returns to the a:\> prompt. Dos 7.1 (the iso version obtained from http://newdos.yginfo.net/msdos71.htm) stops at: ms dos setup cannot locate the sources files...etc The fact that xp works perfect suggests that the cdshell and diskemu are working as advertised and the nt setup is correct. The fact that win98/dos initializes but freezes at setup suggests that I failed to realize to define a source path correctly somewhere. I modified the autoexec per flyakites guide and the layout is verbatium per the guide. As no one else mentions any problems with ima files, I feel I have failed to see a very simple step SOMEWHERE concerning ima files. Also flyakite mentioned extracting the Microsoft Corporation.img using ISOBuster and renaming it to a DAT file in the (boot sectors section). Doesn't this only pertain to NT technology ima's?