Uncooperating unit

I recently installed a “new” sony ide dru-v2041 internal drive that I had purchased, to an external usb enclosure enabling me to use it as an external plug and play unit with my toshiba laptop running widows xp home edition. The Laptop can see the sony drive “E”, however the drive is not reading any formatted disc nor unformatted disc. I tried to play a dvd movie to see if the drive can read the disk but the message always reads “insert disk” when I try to access the contents of the drive. Does any know if I have to flash any firmware to make this drive work or is this drive d.o.a. Sony does not have any firmware posted on there website. thanks

Probably the enclosure is not suitable for this drive.