[NTLUG:Discuss] 2 Questions about creating CD's from iso images.

[Jack Snodgrass]

On Thu, 2003-01-02 at 23:08, Wayne Dahl wrote:
> Ok...let me ask this again...because I don't think I got the answer I
> was looking for...
.... snip ....

> > I "always" use cdrecord to convert my iso images to CD plastic.
> > 
> > You will need to install the ide-scsi kernel module and potential add an 
> > "hdc=ide-scsi" type boot option (most distributions do this for you if 
> > they detect an IDE CD-R/RW during installation).
> > 
> > "cdrecord -scanbus" will tell the "dev" information
> > 
> > "cdrecord -v speed=8 dev=<dev-id> <iso-image_filename>" will burn the CD.
> > 
> Ok...here's where you're losing me guys.  When you record the iso image
> using the above info, doesn't cdrecord (or any other CD burner software)
> just burn one big file with a .iso extension?  I tried this with Gnome
> toaster, got one file with the filename psyche-i386-disc1.iso...nothing
> you could see any files with.  Does cdrecord take that command and pull
> everything out of the .iso file?
... snip ....

everything that you burn to a CD is an .iso image. If you use a program 
to put data on a CD, it makes an .iso image out of the data and you end
up burning the .iso image to the CD anyway. You just don't know that 
your burning an .iso image. ;) 

mkisofs takes a group of files and packages them up into an .iso image 
that you can burn to a CD. 

Also you can mount a .iso image to a virtual drive ( I forget how eactly
at the moment ) and look at it like it is mounted in your CD. 

You can also use the command: ( something like ) 
dd conv=noerror if=/dev/cdrom of=/tmp/vcd/out.iso bs=16k
to copy data from a cd ( in /dev/cdrom ) to an .iso file. 
You can then burn this .iso file to another CD or mount 
it in some sort of virtual cd player. I have all of my 
children's learning software mounted this way. They tend 
to destroy/loose the CDs pretty quickly.  I just make a 
.iso image copy and mount it in a virtual CD player. 

jack