From Michael's Information Zone
michael@michael-ThinkPad-X220:~$ apt-cache search geteltorito genisoimage - Creates ISO-9660 CD-ROM filesystem images michael@michael-ThinkPad-X220:~$ geteltorito /usr/bin/geteltorito [-hv] [-o outputfilename] cd-image Script will try to extract an El Torito image from a bootable CD (or cd-image) given by <cd-image> and write the data extracted to STDOUT or to a file. -h: This help. -v: Print version of script and exit. -o <file>: Write extracted data to file <file> instead of STDOUT. michael@michael-ThinkPad-X220:~$ geteltorito -o x220_1.4_office.img Downloads/8duj26us.iso Booting catalog starts at sector: 20 Manufacturer of CD: NERO BURNING ROM Image architecture: x86 Boot media type is: harddisk El Torito image starts at sector 27 and has 63488 sector(s) of 512 Bytes Image has been written to file "x220_1.4_office.img".