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I am writing a small archiving script, which saves selected directories and files onto a cd. I intend to burn the iso-s on the fly, without saving the iso images inbetween.
However, in that case I don't know really how big the iso image will be. I have calculated the size using 'du' but is this the relevant number? Do I need to add something for boundary information? How much space there is on a CD(-RW)? On the package it is written 700MB, but is this correct? What happens if I try to burn a bit more?
So, I have a lot of questions, hope' someone can explain me these issues.
So, you mean that if 'du' shows <= 700MB, then it is OK?
not sure what you're meaning by boundary numbers...
I have heard that each session needs 13MB in addition for "session info" if burning multi-session. I guess a single-session CD has something similar. But if the size is flexible to a certain extent then it should be just fine... :-)
yeah that will be fine. in reality the 700mb is the volume of data that can be stored on a filesystem on the CD. a CD image contains that filesystem too, so can be quite a bit bigger than the size of the offical capactiy.