I have 4-years old Biostar GF7050-M2 with one IDE port for two devices. WD400 and ASUS DVD-RW work great until one day I found that DVD recorder not available in My Computer. Bios shows wrong names for these devices.
Channel 0 Master [VDB VD400BB-45JK@01]
Channel 0 Slave [@STS DRV-0608PZR]
I tried new IDE cable, reset bios settings to default, remove bios battery.