I have a DELL Poweredge 2950
OS Red Hat Version 4.1.2-44
with a /dev/scd0 linked to /dev/cdrom: ata2.00: ATAPI: TSSTcorp DVD+/-RW TS-L633A, D200, Rev UDMA/100. The server is less than three months old. The DVD had been working fine until last week. Now it won't, I put a new disk in the drive, the LED blinks about 4 times and stops. I've tried multiple media and media that the drive was reading, but no luck. Can someone please give me some troubleshooting pointers? Thanks!!