It will depend on the distro. For example, last time I used rh (8.0) you couldn't because the installer expects the disks to be made from iso files, which were images of cd's not dvd's. Copying the files wouldn't do it. I'm sure the are some that could with a little finigaling. Slack maybe? Or a source based distro like LFS (what I'm using), but I doubt that's what you have in mind.
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