CloneCD Guide - Page 9

Various Protection Tests - Page 3

C) SecuROM
Unlike SafeDisc & LaserLock protection, SecuROM protection stores its digital ID in the SubChannel Data. Also, SecuROM protected CDs don't contain any unreadable sector. Only one option needs to be ticked for read setting: "Read SubChannel Data from Data Track"

Comment: All Plextor drives can read SecuROM protected CDs but Ricoh and Yamaha much faster.

Comment: The same results we will get using the backup SecuROM protected CD.

D) LibCrypt:
Like SecuROM protection, LibCrypt store its digital ID in the SubChannel. The only difference is that during writing process, option "Don't repair SubChannel" need to be ticked since LibCrypt need the full 96 bytes SubChannel Data (all 8 SubChannel : P,Q,R,S,T,U,V,W 16 bytes each) whereas SecuROM uses only 16 Bytes Q-SubChannel Data. The reason for the 96 bytes requirements on PSX is, that the CRC of some SubQ Data needs to be incorrect, and when writing 16 Bytes SubChannel Q the writer corrects that on its own.

Update:
Recent game MediEvil 2 seems to be an exception: SDC/Paradox reported us that game crashes at Level 3 even if it was backed up with CloneCD. :(

Lots of our visitors reported that CloneCD failed to make backups of DiscGuard & CD-Cops protected CDs (unfortunately we were not having such protected CDs for making tests).

In DiscGuard case , it seems that this protection isn't really reliable : this protection is in a way *too good* since some CD-Roms refused to run the original CD containing that protection (e.g. Colin Mc Rae Rally) and editor (Codemaster) itself has released a patch that removed the protection!!

In CD-Cops case, we didn't found such CD in order to make tests. However as someone said:

"...The CD-Cops protection measures the time for reading some slightly damaged sectors, and the right behavior cannot always be reproduced correctly. Also don't forget that CD-Cops doesn't work with all CD-Rom drives even you got the original CD. Maybe that's the reason why this protection isn't so wide spread..."

Another message:

"..Hi guys! All of you know that CloneCD makes trouble with CD Cops protected CDs, but the fault is not CLoneCD,no, it is the media you use. I'm testing now different medias. The only two Media Types that worked perfectly on every computer and drive I could test, are: Mitsui Gold 74 and Kodak Gold Ultima 74. Looks like that Gold media's have the best reflection on the market and so they work with CD Cops protected programs. The media I have tested so far: TDK, Verbatim, Traxdata, Fuji, Tevion, Philips, Sony, Lead Data, Teac, Yamaha and Basf..."