I thought that depended on the size of the CD. for instance I have a
700MB CD. to do a back up I star the directory I want backed up then
gzip and / or split until I have an iso image that will fit. 

Carl P. 

On Wed, 2002-03-13 at 11:49, Lynn David Newton wrote:
> 
> My previous post about cdrtools and xcdroast were just
> a windup to a question.
> 
> Who can tell me what the correct upper limit on the
> size of an iso9660 (CD image) file system is, in
> blocks? Or in megabytes? 
> 
> That should be an easy question, but I can't lay my
> hands on the answer.
> 
> My problem is this: My home directory now has 7014 MB
> worth of files in it. I do backups to CD-RW disks. I'm
> trying to redesign my scripts to break this up so that
> I can save *everything*, but over a sequence of five
> days. This means calculating how much space is in
> various subtirectories, creating a list of directories
> to backup, and creating ISO images.
> 
> I've seen mkisofs go ahead and make an iso image of
> preposterously large proportions. It will issue a
> warning, but it will make it.
> 
> Of course, if I try to burn that image onto a CD,
> that's when I get a failure -- fortunately before it
> starts burning the image.
> 
> But I don't know what number to shoot for. How large
> can I make my ISO image before it goes over the wall?
> 
> Thanks for any help on this one.
> 
> -- 
> Lynn David Newton
> Phoenix, AZ
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