That
last command will show you the contents of the ISO file . . . you can
read it, copy files from it, but ( of course ) not write to the ISO.
But
what you can do is copy the files to a special directory ( or partition
) and do an install from the HD. In the case of the Fedora example
above you would put the files of the 4 ISO's in a directory. Then
download the "boot.iso" from the ftp mirror ( For Fedora Core 4:
ftp://ftp.nluug.nl/pub/os/Linux/distr/fedora/core/4/i386/os/images/boot.iso
).
1). Boot from the boot-CD
2). It will give you a dialog where you want to install from: choose
"hard disk"
3). The next dialog will ask you from which HD ( if you have 2 )
4). After that a dialog will ask you on what partition the files are
located
5).
And the next dialog asks "Directory or ISO image _________" type the
path to the directory you copied the files to and press OK
After
that, the program will load into memory and proceed to go on as a
normal install. This way you only have to burn 1 CD instead of 4.

Bruno
NOTE:
The Mandriva 2005 has a new feature in the boot.iso that can install
directly from ISO files stored on the HD without having to "loop" them
first.
-- Jun 7 2005 ( Revised Dec 15 2005 ) --