It shows up as a scsi device because in previous versions of cdrecord
there was no support for writing to atapi drives, so it had to be
emulated as a scsi device, now though there is ATAPI writing support in
cdrecord however cdrdao is still lacking in that area, and unless you
only burn ISO's and data its easiest to just stick with using scsi
emulation untill atapi writing is supported all around.

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BoBB