Sorry skipping the details, I used CDIMAGE to make the iso. I used the MSFN Unattended windows tutorial to slipstream sp 2 for xp pro. Now, upon trying further, I'm not getting the above mentioned error message (with the error 14) anymore, now it just won't open, or boot into it. I'm working with a clean hard drive with just cd rom drivers and command.com, freshly formatted. when I go to the cdrom, the iso is there, but I can't open it. Any other details, please ask. Thanks