Hi! What do you want to contribute?
677 2019-04-08 08:29:52
Re: Dumped new Japanese Win95 Game (1 replies, posted in Guests & account requests)
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678 2019-04-06 20:14:04
Re: Registering for an account (1 replies, posted in Guests & account requests)
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679 2019-04-06 20:13:44
Re: IBM PC Compatible Dumper (7 replies, posted in Guests & account requests)
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680 2019-04-06 20:13:15
Re: Account please (1 replies, posted in Guests & account requests)
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681 2019-04-06 20:12:11
Re: request account (5 replies, posted in Guests & account requests)
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682 2019-04-05 12:18:23
Re: Dumping Xbox / Xbox 360 security sector ranges (28 replies, posted in General discussion)
Jackal wrote:
Did a first test on Kreon drive today with CloneCD. It would skip through the first couple error sectors, but would stop reading and start making noises as soon as it reached the first ring. So a different drive or custom tools would be needed to dump this data. Will try some other drives later with disc swap.
I'd recommend to try IsoBuster to manually find the truly unreadable ranges and to dump everything else skipping those sections. The logic is described above (to skip around 300 sectors after the first 1-2 unreadable ones, then to search for the first readable one after the skipped ones).
683 2019-04-04 11:01:00
Re: registration request (4 replies, posted in Guests & account requests)
Dump something 
684 2019-04-04 07:29:50
Re: Dumping Xbox / Xbox 360 security sector ranges (28 replies, posted in General discussion)
emuLOAD wrote:
As long as the beginning and end of these sectors are well known are documented, I see no harm with the current method which ignores those bits.
If these sectors are somehow generatable, then, yes (and even then it's better not to ignore them, but to generate, similar to how the "injected" last sector was added on PSX NoEDC images back in the days) otherwise - no, these bits shouldn't be ignored, if they contain unique data.
685 2019-04-04 07:02:33
Re: registration request (4 replies, posted in Guests & account requests)
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686 2019-04-04 07:01:18
Re: Request for new account (3 replies, posted in Guests & account requests)
Notice, that you may have problems with receiving the forum mails on your Hotmail box.
687 2019-04-04 07:00:44
Re: Request for new account (3 replies, posted in Guests & account requests)
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688 2019-04-03 23:37:53
Re: Dumping Xbox / Xbox 360 security sector ranges (28 replies, posted in General discussion)
As I've said, there should be a mechanism to dump and add the discs properly for those who want it so. Nobody says about marking the existing ones as bad.
689 2019-04-03 14:12:45
Re: Dumping Xbox / Xbox 360 security sector ranges (28 replies, posted in General discussion)
reentrant wrote:
You don't have access to low level read commands that return DVD correction codes.
You do - http://forum.redump.org/topic/3808/raw- … iscussion/
reentrant wrote:
In CD terms it's like you would be trying to read more sectors from unreabable range but in 2048 mode. Your drive firmware tries to correct all mastering errors + data tracks defects which are in turn "masked" by ECC/EDC.
How can you be sure that the data you read is the data on the disc? Without correction codes it's not deterministic to dump such sectors.
I don't understand your question. Those are normal stable sectors, why should they be damaged? It's just XBOX drives are locked to not to read them, but they are mostly readable (and there are also unreadable sectors are unreadable). A couple of test dumps of the same discs from different drives should show everything.
reentrant wrote:
Do you expect that people should rerip all those 2400 discs?
Maybe another dat should be created solely for those SS ranges (similar to DMI, PFI dats)?
An additional status flag would be enough. Preservation enthusiasts will do the needed dumps sooner or later, but there should be a proper software for that.
690 2019-04-03 12:16:46
Re: Account requests (1 replies, posted in Guests & account requests)
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691 2019-04-02 07:34:23
Re: I would like to contribute to Redump (1 replies, posted in Guests & account requests)
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692 2019-04-02 07:24:53
Re: Dumping Xbox / Xbox 360 security sector ranges (28 replies, posted in General discussion)
But it would be nice to add an option into DIC to read the SS contents fully. As far as I've understand, the first 1270..1285 sectors of each SS area are usually readable, then we have 305..320 unredable sectors, then we have good sectors upto the very end again. If you add the "xboxswap" mode for the method described above, I don't see a reason why not to dump these sectors at least optionally. As for the reading algorithm: you read until a read error, then you check the next 1 or 2 sectors, if they aren't readable as well - you skip 300 sectors. If that sector is readable, you start to read backwards until you find another errorneous sector, then you read forward again, dumping the contents; if that sector isn't readable, you check the next sectors one by one until you find a readable sector, then you continue to dump.
sarami wrote:
But if there are some real error sectors, it's difficult to distinguish the unreadable sector of SS and the real error sectors.
Yes. But, again, it would be as good dump as possible, since the tool would test 2-3 sectors, if they are bad, it would skip 300 sectors and would look for the first readable one, either forward or backwards.
As far as I see, the real SS sectors have around 305-320 unreadable sectors per 4096 area, if the amount of unreadable sectors for a single sequence differ, that should mean read errors
Sarami, have you tried to implement that?
693 2019-04-01 08:37:19
Re: Possible Contribution - Rare (?) Cancelled Expo Demo Game (2 replies, posted in Guests & account requests)
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694 2019-04-01 08:36:38
Re: Account Request (1 replies, posted in Guests & account requests)
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695 2019-04-01 08:35:53
Re: Account Request (1 replies, posted in Guests & account requests)
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696 2019-04-01 08:35:08
Re: Account creation request (1 replies, posted in Guests & account requests)
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697 2019-03-31 11:40:20
Re: DiscImageCreator (3,497 replies, posted in General discussion)
sarami wrote:
F1ReB4LL wrote:Was 313 errors (incorrect), became 315 errors after your fixes (also incorrect, should be 314 or am I wrong?).
Which sector should be correct?
edccchk wrote:
Non-data sectors........ 91
Mode 0 sectors.......... 0
with errors..... 0
Mode 1 sectors.......... 18908
with errors..... 223
Mode 2 form 1 sectors... 0
with errors..... 0
with warnings... 0
Mode 2 form 2 sectors... 0
with errors..... 0
with warnings... 0
Total sectors........... 18999
Total errors............ 223
Total warnings.......... 0
Total errors+warnings... 223
223 + 91 = 314
CDMage also shows 314.
698 2019-03-30 20:53:08
Re: DiscImageCreator (3,497 replies, posted in General discussion)
http://forum.redump.org/post/68259/#p68259 -- sarami, do you follow the discussion? Was 313 errors (incorrect), became 315 errors after your fixes (also incorrect, should be 314 or am I wrong?).
699 2019-03-29 10:57:15
Re: Account Request (1 replies, posted in Guests & account requests)
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700 2019-03-26 08:19:28
Re: DiscImageCreator (3,497 replies, posted in General discussion)
http://forum.redump.org/topic/21717/pce … de-gozaru/ -- this was dumped not with recent DIC version (yet), but the logs show the DIC has used a wrong TOC/Sub desync detection logic there. The TOC points at sector 47869, DIC says the track starts at 47870 according to the subs, but that's wrong. The Q-channel of the sector 47869 contains the EAN data, but the P-channel is filled with 0xFF and the next sector's P-channel is filled with 0x00, that means the sector 47869 belongs to the Track 10 according to the the subs as well.