Great thread, great replies!
Here's an simple overview for those learning:
SubChannel data was actually only used on Audio formats from what I can see, don't think any other CD formats (data)used it...so it was completely dropped from future optical discs.
RAW CD copy is possible (2352). RAW means as in user data, toc & Subchannel. Data Mode 1/2 formats will have some extra EDC/ECC. There is no such thing as a true 1:1 copy (i.e. Lead-In, CIRC, EDC, ECC, Sync etc.) all get omitted - so their is places to hide protections (e.g consoles)
RAW DVD was curbed due to CSS so can't fully be done, but as was said some drives (ones that copy Wii games) can do 2064. (thanks to truman for that info :bigsmile:)
1:1 RAW+96 is a refernce to CDs only, RAW (2352) per sector and 96 bytes subchannel. This does not mean it is truly a 1:1 (as it's not as explained above) it means that it's as close to it as consumer level drive will do. 1:1 Backup usually just means a "working copy" :iagree: