Not able to format Ritek DVD RAM (Optiarc AD-7200S)

[qanda]This question is published in the hardware section for the Optiarc AD-7200S. Click here to view full specs.[/qanda]I tried formatting a new Ritek Excellent DVD-RAM CPRM media in 7200s. I tried the format UDF2.0, FAT32 (with physical format option also). I get an error indicating "Format cannot be done, Check disk).  Can any body tell me the reason for this…

Further to my previous post…

I tried doing formatting with UDF1.5 (Physical format was checked) of Ritek Excellent DVD-RAM CPRM media in Optiarc DVD RW AD 7170A. It gave an error after 39 minutes.

I immidiately tried formatting it with UDF1.5 (physical format unchecked). The formatting was successful. I am able copy any content into the media.

Any explanations for this ?

Seems to be re-formatted differently.