/dev/cdrom or /dev/cdrom2 is just a symlink.. you need to point it to your actual device...
For example.. I have my cdrom drive in my desktop on the Secondary controller set as the Master drive.. so its dev is /dev/hdc
For me to create the symlink I would do:
ln -s /dev/hdc /dev/cdrom
hda = Primary Master
hdb = Primary Slave
hdc = Secondary Master
hdd = Secondary Slave
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