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Re: DiscImageCreator
Posted: Tue Sep 25, 2018 2:31 pm
by reentrant
00 FF FF FF FF FF FF FF FF FF FF 00 01 82 00 61
When you XOR with 0x60 you get 1 = Mode 1. It makes sense.
All other sectors are mode 2?
Re: DiscImageCreator
Posted: Tue Sep 25, 2018 2:51 pm
by celebi
Nope, all sectors are mode 1.
Re: DiscImageCreator
Posted: Wed Sep 26, 2018 4:19 am
by sarami
celebi wrote:Interestingly the checksums doesn't match with either CD Manipulator or Clone CD.
And even more interesting is that edcchk hasn't detected an error in sector 150 (00:02:00) and just detected it as Mode 1 data sector.
Because descrambled sector of LBA 0 (sector 150) is no problem. As you say, CD Manipulator and Clone CD is padding this sector by 0x00 or 0xff.
This is a similar case
/viewtopic.php?p=39475#p39475
Firstly, you need to check by cdtoimg.
http://www.mediafire.com/file/9b31r4fv4 … g.rar/file
This is a simple 0xd8 ripping tool. Please check if 1st sector is really same as dic's 1st sector.
Secondly, you need to check the pregap sector of 1st track.
Code: Select all
DiscImageCreator.exe audio <DriveLetter> <Filename> <DriveSpeed> -5000 0
Please check the position of the sync (00 FF FF .. FF 00)
Re: DiscImageCreator
Posted: Fri Sep 28, 2018 12:06 pm
by celebi
sarami, the dumps of cdtroimg and the scrambled DIC file differ. From what I can tell, DIC is missing the first 32 bytes of the image.
First few bytes of the DIC .scm image:
First few bytes of the cdtoimg image:
Trying to read the pregap threw lots of errors - log file and resulting dump available at
https://www87.zippyshare.com/v/Xhoz9VMK/file.html
Is it possible that this is a disc with a mastering error instead of a copy protection?
Thanks for your help!
~celebi
Re: DiscImageCreator
Posted: Sat Sep 29, 2018 8:37 am
by sarami
celebi wrote:DIC is missing the first 32 bytes of the image.
First 40 bytes are cut. Because .scm is an image the offset is calculated. I confirmed cdtoimg image was same as _disc log.
Code: Select all
========== OpCode[0xd8]: SubCode[0]: Check Drive + CD offset ==========
========== LBA[000000, 0000000]: Main Channel ==========
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
0000 : 5C 7A B9 E3 32 C9 D5 96 DF 2E D8 1C 5A 89 FB 26 \z..2.......Z..&
0010 : C3 5A D1 FB 1C 43 49 F1 F6 C4 46 D3 72 DD E5 99 .Z...CI...F.r...
0020 : 00 FF FF FF FF FF FF FF 00 FF FF FF FF FF FF FF ................
0030 : FF FF FF 00 01 82 00 61 00 28 00 1E 80 08 60 06 .......a.(....`.
0040 : A8 02 FE 81 80 60 60 28 28 1E 9E 88 68 66 AE AA .....``((...hf..
celebi wrote:Trying to read the pregap threw lots of errors - log file and resulting dump available at
Thanks. I found offset of the pregap (and TOC) area was -22.
Code: Select all
0020 : 00 FF FF FF FF FF FF FF 00 FF FF FF FF FF FF FF ................
0030 : FF FF FF 00 01 82 00 61
Due to incomplete/garbage sync from 0020 to 0027, offset of LBA 0 is shifted to -20.
celebi wrote:Is it possible that this is a disc with a mastering error instead of a copy protection?
Probably yes. F1ReB4LL comments about Gulf War: Soukouden ->
https://redump.info/disc/45432/
Re: DiscImageCreator
Posted: Sat Sep 29, 2018 8:51 am
by reentrant
This example shows the power of DIC + Plextor drives
Re: DiscImageCreator
Posted: Sat Sep 29, 2018 8:59 am
by celebi
Thanks sarami for your great support!!
Is it now safe to submit the DIC dump? Which comment should I choose regarding this weird sector 150? What about the error count - "1" as reported by CD Manipulator and CloneCD or "0" as reported by DIC+edcchk?
Re: DiscImageCreator
Posted: Sun Sep 30, 2018 11:10 am
by Jackal
Re: DiscImageCreator
Posted: Mon Oct 01, 2018 9:26 am
by sarami
Jackal wrote:Here a dump with CATALOG 000000000000 (one 0 less than normal):
fixed: 2nd argument of snprintf (linux only)
http://www.mediafire.com/file/uw3e03kdk … t.tar/file
celebi wrote:Which comment should I choose regarding this weird sector 150? What about the error count - "1" as reported by CD Manipulator and CloneCD or "0" as reported by DIC+edcchk?
Perhaps admin or moderator will judge it properly.
Re: DiscImageCreator
Posted: Mon Oct 01, 2018 11:38 am
by ajshell1
Hey sarami. Did you ever address my recent post on SafeDisc? nightson has also talked to me recently, stating that he is getting the same issue.