I have just started to use nlite (v.1.4.9.1). I want to make an XP iso that I can use as a guest OS in a virtual machine. My CD is an OEM version of XP SP1 with ghosted files. The installed /i386 folder on the computer hard drive is located as a subfolder of the Windows folder. I have made 5 isos so far adjusting each one on the basis of information I have found on this (and other) sites. I don't yet have a virtual machine set up, so I test each iso by burning a CD and booting from it. The first four isos boot to the point where they declare they are examining setup and then have displayed the message - put a service pack 1 disk in Drive A:. I noted that this error has been reported by many people. In my case, it persisted even after adding WIN51, WIN51IC and WIN51IC.SP1 text files to the folder within which I copied my /i386 subfolder to. (I also copied these files to the /i386 subfolder itself.) After the first two problematic isos, I noted that I didn't have the bootimage file (Microsoft corporation.img or bootimage.img) in either folder, and I extracted a file named bootimage.img from the CD using IsoBuster. This file is ~1.4 megabytes. I placed this file in both the temp folder and subfolder holding the copy of my /i386 folder. I used both Roxio Creator Classic, nLite itself and an isoburn program (when running linux). In retrospect, I may have made a mistake in some of these isos because I didn't use the same name for the boot image file in both the temp folder and the i386 folder. For iso #5, I rechecked what the SIZE of the microsoft corporation.img file is supposed to be; since it is to provide the boot sector for the CD, 1.4 megabytes is way to large. In fact, it is supposed to be a 2K file. So apparently, the emachines CD has a boot floppy image that is supposed to work with the ghost.exe file to install the recovery OS, but is not compatible with a pure CD boot. So, I found a proper copy of Microsoft Corporation.img and used that in making iso #5 with nLite. For iso #4 and #5, I used nLite itself to burn the CD (rather than Roxio [v 6]). Notably, this was the first iso generating session in which nLite DIDN'T complain that it couldn't find the ident file (previously, I would get this message, hit enter) and the program would proceed. More notably, iso #5 with the correct boot img file, was UNDETECTED as a boot CD. Instead, my usual boot screen from the hard drive appeared. The only other thing I haven't tried yet is editing the TXTSETUP.SIF file. Appreciate comments, suggestions, recommendations. Thanks in advance. Steve For the fifth iso, I thought that the problem