Originally Posted by xzibit-d12
# mkisofs -J -r -T -o /tmp/your.iso /mnt/cdrom
Making a new .iso file from the filesystem view of the cdrom seems complicated and error prone. I don't know exactly what is wrong with that command, and I'm sure there is a correct command that would work. But the concept is bad.
It should be easy to read the .iso directly off the CD. I'm surprised no one here has told you that command.
I always do such things with ImgBurn in Windows and what you want to do is trivial an obvious in ImgBurn.
K3b in Linux is nearly as easy as ImgBurn in Windows. I don't know for sure that it can read a CD as a single .iso file, but I expect it can. I just don't know the right command.
I hope you understand at least the conceptual difference between:
A) Reading a CD as a directory tree of file and converting that directory tree of files to a bootable .iso file.
B) Directly reading the image from a CD to duplicate the .iso file that was used to originally write that CD.