>Does anyone know that what is the actual capacity of a DVD-ROM?
That's not as straightforward as it may seem.
Ok, it's 650 megabytes, or 680 million bytes (easy conversion--20 megabytes
= 21 million bytes).
However, a CD-ROM stores its data in 32K clusters. If you have a 10-byte
file, it will occupy 32K on the CD-ROM. I've run into this, when I did an
installer that copied some 800 small html files from the CD to the hard
drive. If I remember right, all the files were under 1K, but they
collectively took up around 400 MB on the disc.
Cordially,
Kerry Thompson
Learning Network
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