You are correct, writable media is not "blank" as such and as you mentioned, Contains information about the physical characteristics. That is why you cant simply bit for bit copy a dvd with the encryption in place. You cant write to the area of the disc which tells it whether or not the contents are encrypted or not and with blank dvdr(w) it is always expecting the movies to Not be encrypted (except that apparently with DVD +R it is possible to write to this area of the disc if the firmware would allow it).
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jérôme Nicolle Sent: 29 November 2005 15:26 To: [email protected] Subject: Re: [Free60-Devel] Game DVD formats Segin a écrit : > > How can a CD-RW drive determine a CD-R from a CD-RW? It's the disc > substrate material. It refelects different light fequencies, which > makes all the difference. You may want to try the original type of > DVD-R from the late 90's. On the first xbox, GD had an extra TOC (table of Content) located beyond the standard DVD TOC, wich in this case refered to a Video DVD. The GD were usable on a xbox original drive because it's firmware made it looks for the non standard TOC before the standard one. About writable medias, i thought they also had a special track containing their physical characteristics, thus letting the burner sets an appropriate laser power and writing speed... But I may be wrong ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ free60-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/free60-devel ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_idv37&alloc_id865&op=click _______________________________________________ free60-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/free60-devel
