hmh this is interesting. everybody in linux has already known this for years but i m new to this and i learn from them and this is what i got. so i m combining multiple iso in slackware 10.0. coz i downloaded them in three cds.
this is what u r gonna do, u will have cd1.iso cd2.iso cd3.iso (cd = slackware cd)
#mount -o loop cd1.iso /tmp/d1 (u can change /tmp by any folder u want)
#cp -a /tmp/d1/* /tmp/combine
do the rest for the other cd
#mkisofs -o /tmp/dvd-image.iso -R -J -V “Slackware Install” -hide-rr-moved -v -d -N -no-emul-boot -boot-load-size 4 -boot-info-table -sort isolinux/iso.sort -b isolinux/isolinux.bin -c isolinux/isolinux.boot -A “Slackware Install CD” .