How to create a compressed (!) *.iso image from directory tree ?

[Guest Frank Callone]

It started all with an existing *.iso image archive file.

 

I extracted the content onto my hard disc.

 

While the original *.iso image file archive has a size of lets say 2000000 bytes the

extracted directory tree has a size of total approx. 3000000 bytes (=50% more).

 

Now I tried to re-pack the extracted directory tree back into a new *.iso image.

Yes I could do it with some tools. But the resulting *.iso file had always a size

of 3000000 bytes just as the original directory tree.

 

Unfortunately I did not found a way of creating an *.iso image which is compressed.

 

How do I create a (maximum) compressed *.iso image file ?

 

The test operations described above were just test cases to find out the compression ratios.

I planned to apply later the compression + *.iso image process on other different directory trees.

 

Frank