I have been through several forums and disscustion boards stating about an issue with windows 8 out of which the DVD /CD drives no longer get detected. well here is some explanation to it and a way to make it work if it is not working as expected.
In order for ZPODD to work, the ZPODD feature must be supported by the optical drive, the motherboard, and the BIOS.
In some cases even after inserting a Disk in the drive, the drive icon still doesn't show up. you may follow the steps below to make that work.
1. Run Command Prompt as an Administrator. Directly type cmd in the new Start Screen(a.k.a Windows 8 Metro UI) and press cltr+shift+enter.
Now copy the following , right click command prompt and select paste and the Enter.
reg.exe add "HKLM\System\CurrentControlSet\Services\atapi\Controller0" /f /v EnumDevice1 /t REG_DWORD /d 0x00000001
2.Reboot the system
3.Verify if the problem has been resolved.