On Fri, 31 May 2013, Florin Iucha wrote: > On Fri, May 31, 2013 at 05:19:26PM +0000, Miller, Seth wrote: >> It didn't take long to find out that there is a way to force the >> update by modifying the autoexec.bat on the iso. However, when I mount >> the iso in Linux, I don't see any of the files. My assumption is that >> the iso is using a dos boot loader. What I don't understand is why I >> can't read those files. >> >> Anyway, the objective is to extract the autoexec.bat, modify it and >> put it back into the file or just create a new iso with the files. Any >> help or suggestions would be appreciated. > > What you have there might be an "El-Torito" image, where a 1.44MB or > 2.88MB floppy image is loaded into RAM and used to simulate a floppy > disk. That image and its contents do not appear when you mount an iso > as a filesystem. You'll need to dig in the file using a hex-editor, > looking for the FAT or the boot sector to identify where the image > starts. > > Cheers, > florin > > -- > Sent from my last battery. > You can export the boot image pretty easily. I like the tool isomaster for dealing with bootable ISOs. Takes them apart. Puts them together and makes them bootable. Gerry