I'm making some backup on large Zip file, some things like 300Mo the file and more. When it's on the Harddrive, I can open and have the list of the files within. But If I put the file on a CD-Rom (W and RW), and open it from the CD-Rom the list is empty, but I can ask to unzip it....

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It does that only on large file, but I don't know at which size it begins to bug...