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Problem dumping LaserLock protected disc.
Posted: Thu Feb 16, 2017 7:36 pm
by TheRetroPirate
I have a disc, Outcast (German) (Disc 2), which uses LaserLock protection and I can't seem to get a consistent dump from this.
The disc has one data track and multiple audio tracks, only the data track is different every time the audio tracks always match.
Is it even possible to dump this reliably?
I'm using DIC with PX-W4824A.
Command line is "DiscImageCreator.exe cd w: oc2\oc2.cue 8 /c2 /rc"
Re: Problem dumping LaserLock protected disc.
Posted: Fri Feb 17, 2017 1:15 am
by Jackal
You cant dump such discs reliably with DIC.. I'll write some instructions later
Re: Problem dumping LaserLock protected disc.
Posted: Fri Feb 17, 2017 10:17 pm
by sarami
ReadMe.txt
Code: Select all
* Probably Unsupported Disc
- Protected Disc
no signal sector => LaserLock, RingPROTECH, ProRing
The result doesn't match at each drives.
read error => CodeLock
Compared to CloneCD or CD Manipulator, a plextor detects a double error.
* Unsupported Disc
- Protected Disc
different frequency => SecuROM(v5 or higher), StarForce, CD-Cops
These needs DPM(Data position measurement). cue, ccd doesn't support DPM.
To store DPM, you need to use the Alcohol 120/52% (http://www.alcohol-soft.com/)
duplicated(double, triple) sector => Alpha-ROM, ROOT, TAGES
It can read in reverse, but specifications are not decided in redump.org
Jackal wrote:I'll write some instructions later
I want your instruction of the RingPROTECH, ProRing, Alpha-ROM, TAGES too.
Re: Problem dumping LaserLock protected disc.
Posted: Sat Feb 18, 2017 2:30 am
by reentrant
RingProtech: Maybe when first bad sector occurs (N), attempt to read K sectors at position (N+100). If all K sectors are read then you're after bad area. If there's still error read sectors at position (N+200) and so on till you find good area. Once good area is found, read backwards and find first good sector (N+X). Now you know what bad area spans from N till N+X. Fill it with error pattern...
I have two RingPROTECH games and one LaserLock. it should work for them considering there's only 1 bad errored area...
Re: Problem dumping LaserLock protected disc.
Posted: Sat Feb 18, 2017 2:50 am
by Jackal
CodeLock and LaserLock are similar in that you try to get as many readable sectors as possible with one or more non-plextor drives until you get consistent results. CodeLock patterns can vary:
https://redump.info/discs/quicksearch/cod … tion/only/
LaserLock usually has around 12 unreadable areas of 78-82 errors. See the comments for some examples:
https://redump.info/discs/quicksearch/las … tion/only/
For such discs I use CDTool to browse back manually from the end of each error area and recover as many readable sectors as possible (going back and forth between sectors and rereading sectors multiple times until the drive is able to read them) and inject them into the non-plextor CDM/clonecd data track dump image with a hex editor. For LaserLock discs this means several hours of manual work for each disc and you would need a drive with a powerful laser to grab all readable sectors (Sony Optiarc 7280 gives me the best results, but surely other Optiarc and other brands could work fine too.. it's a process of trial and error).
Re: Problem dumping LaserLock protected disc.
Posted: Sat Feb 18, 2017 4:44 pm
by TheRetroPirate
So basically read the data track as many times as possible with different drives and do a sector compare?
I could use a python script to compare the single sectors, the sectors which never match must be the bad ones.
Re: Problem dumping LaserLock protected disc.
Posted: Sat Feb 18, 2017 4:52 pm
by Jackal
TheRetroPirate wrote:So basically read the data track as many times as possible with different drives and do a sector compare?
I could use a python script to compare the single sectors, the sectors which never match must be the bad ones.
It won't work unless you browse back manually after each error range.
Re: Problem dumping LaserLock protected disc.
Posted: Sat Feb 18, 2017 6:07 pm
by TheRetroPirate
Why is that?
Anyway I made a small python script to compare my 5 dumps of track 1 so far.
And there are indeed 12 ranges with bad sectors.
Code: Select all
Bad blocks found: 732
Bad range: 1 : (2137, 2194) : 57
Bad range: 2 : (2509, 2571) : 62
Bad range: 3 : (2810, 2871) : 61
Bad range: 4 : (3187, 3244) : 57
Bad range: 5 : (3559, 3621) : 62
Bad range: 6 : (3936, 3993) : 57
Bad range: 7 : (4308, 4370) : 62
Bad range: 8 : (4687, 4745) : 58
Bad range: 9 : (4984, 5046) : 62
Bad range: 10 : (5360, 5422) : 62
Bad range: 11 : (5735, 5797) : 62
Bad range: 12 : (6261, 6319) : 58
Re: Problem dumping LaserLock protected disc.
Posted: Sat Feb 18, 2017 9:26 pm
by sarami
Ripping the CodeLock by plextor with 0xd8, the strange string can be seen.
Code: Select all
beware the jabberwock my son the jaws that bite the claws that snatch
CDManipulator and CloneCD recognize the sector including this string as error sector.
Game: Rune
https://redump.info/disc/31708/
hex editor of sector 2327
http://www.imagebam.com/image/0b922f533425871
Left is ripped by plextor PX-W5224A with 0xd8, right is ripped by TSSTcorp DVD-ROM TS-H353A.
Do you think this CDM/CloneCD (right) images are correct? If you so, what is the reason?
Re: Problem dumping LaserLock protected disc.
Posted: Sun Feb 19, 2017 3:12 am
by Jackal
TheRetroPirate wrote:Why is that?
Anyway I made a small python script to compare my 5 dumps of track 1 so far.
And there are indeed 12 ranges with bad sectors.
Code: Select all
Bad blocks found: 732
Bad range: 1 : (2137, 2194) : 57
Bad range: 2 : (2509, 2571) : 62
Bad range: 3 : (2810, 2871) : 61
Bad range: 4 : (3187, 3244) : 57
Bad range: 5 : (3559, 3621) : 62
Bad range: 6 : (3936, 3993) : 57
Bad range: 7 : (4308, 4370) : 62
Bad range: 8 : (4687, 4745) : 58
Bad range: 9 : (4984, 5046) : 62
Bad range: 10 : (5360, 5422) : 62
Bad range: 11 : (5735, 5797) : 62
Bad range: 12 : (6261, 6319) : 58
The error count seems to be 1 more for each range than what you calculated?
If 2137 is the first error and 2194 the last, then the total errors in that range is 58.
And please check with your Plextor drive if the start of each error range is the same everywhere as those combined results? It's possible that one of the non-Plextor drives starts 1 sector earlier on some ranges. I don't know why this happens, but I've seen this happen on some drives (my Plextor drives and the Optiarc one always give the same start sector for each range).
As for the end sectors, you can't say for sure if the current results are final, unless you do a manual check. It's possible that some sectors are readable but only after multiple retries. It's really tricky.
It would probably be a good idea if I purchase this game as well, so that we can verify these results. Is this the disc that you're trying to dump?
http://ogdb.eu/imageview.php?image_id=1 … mp;limit=0 (with the same ringcode?)
Or maybe you have one of the other LaserLock titles that is already dumped, and you could try to verify it. Then we'll know for sure that your method is reliable.
edit: I just bought Outcast, so we should be able to compare results by the end of the week.