Have anyone got any idea about how to scratch a disc so:
It can be ripped by EAC but rereading a lot.
When it's read twice in secure mode it gives the same crcs.
I have tried many ways but it's either a perfect rip (q 100%) or differents Crcs for each rip.
I just wanted to measure how accurate is my drive regarding C2 errors.
Thx
Full Version: How to scratch a disc?
THx
just give the cd one week to me 
What drive do you have? As far as I've read theres only 3 drives known to give 100% accurate C2. One is the Lite-On 52246S, another one is something weird like Cendyne, maybe a rebadged Lite-On anyway and the other a certain Toshiba model.
Sorry I can't remember much more than that
Sorry I can't remember much more than that
QUOTE(/\/ephaestous @ Mar 4 2003 - 03:35 AM)
Have anyone got any idea about how to scratch a disc so:
It can be ripped by EAC but rereading a lot.
When it's read twice in secure mode it gives the same crcs.
I have tried many ways but it's either a perfect rip (q 100%) or differents Crcs for each rip.
I just wanted to measure how accurate is my drive regarding C2 errors.
Thx
It can be ripped by EAC but rereading a lot.
When it's read twice in secure mode it gives the same crcs.
I have tried many ways but it's either a perfect rip (q 100%) or differents Crcs for each rip.
I just wanted to measure how accurate is my drive regarding C2 errors.
Thx
Put it on the floor and "gently" use your foot to scratch it against the floor in circular movements... Worked just fine for me...
QUOTE(dgover2 @ Mar 4 2003 - 08:35 PM)
As far as I've read theres only 3 drives known to give 100% accurate C2.
CDRinfo C2 tests simulates light errors. Drives can loose their C2 accuracy as the error rate grows.
http://www.digital-inn.de/showthread.php?t...14640#post60894
Interesting...
I guess I'll leave C2 off since I created a test disc and both had problems but C2 didn't report any..
I guess I'll leave C2 off since I created a test disc and both had problems but C2 didn't report any..
By the way, with the DAEQuality package, there is no need to get all errors corrected. You can damage the CD until it gets unrecoverable errors.
The program just checks that the drive reports a C2 error for every difference between the reference file used to burn the CD and the rip.
The program just checks that the drive reports a C2 error for every difference between the reference file used to burn the CD and the rip.
I understand that.
The DAEQuality test says 99% but when ripping a scratched test cd C2 doesn't work well it says 100% quality while in No C2 it reports a read error.
Comparing the rips with the original rip (before scratching the disc) shows errors where the are pointed in No C2 mode in both waves (C2 On and C2 Off).
So I guess I'm better of not using C2 at all. I mean the point of EAC is to be certain if there were errors, so even if it's 99% corrected it doesn't give me the warm-fuzzy feeling
The DAEQuality test says 99% but when ripping a scratched test cd C2 doesn't work well it says 100% quality while in No C2 it reports a read error.
Comparing the rips with the original rip (before scratching the disc) shows errors where the are pointed in No C2 mode in both waves (C2 On and C2 Off).
So I guess I'm better of not using C2 at all. I mean the point of EAC is to be certain if there were errors, so even if it's 99% corrected it doesn't give me the warm-fuzzy feeling
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.