About "bad" headers and image errors

[pepsidrinker]

What does this all mean to us dumpers? We can't check for errors at all? Dump the game twice one image gets no errors in psxt001z and cdmage the second image has one repairable error which if you fix gives the same checksum as the first does that mean the second image was correct and the first one wrong?

[Dremora]

What does this all mean to us dumpers? We can't check for errors at all?

You can check, but you shouldn't fix errors with CDmage.

Dump the game twice one image gets no errors in psxt001z and cdmage the second image has one repairable error which if you fix gives the same checksum as the first does that mean the second image was correct and the first one wrong?

In this case no. Mastering errors will always be read as errors.

[pepsidrinker]

Ok, is there anyway to check for mastering errors before you dump the disc? I have another question theres been a couple of times when one image had an error on a certain sector and the other image had a error on a different sector they was both repairable with cd mage but wasn't noticed with psxt001z so I repaired them with cdmage and the checksums was the same after that, was that dump bad?

[Dremora]

Ok, is there anyway to check for mastering errors before you dump the disc?

If the dump doesn't contain any errors, it has no mastering errors. If it has one or more errors, try dumping the disc again or use another drive. If all images are the same and have errors, that almost certainly means that these errors are due to the mastering.

I have another question theres been a couple of times when one image had an error on a certain sector and the other image had a error on a different sector they was both repairable with cd mage but wasn't noticed with psxt001z so I repaired them with cdmage and the checksums was the same after that, was that dump bad?

This dump should be OK. You can also replace bad sector in one image with good sector from another — you should have the same results.

[pepsidrinker]

Ok, thanks... I don't have anything to worry about with my dumps then.

[themabus]

those errors, those, that are known to be there: Demo One v.4, Ready 2 Rumble: Round 2 (btw, for both - EU & USA?), are there any similarities? are they in header/subheader or body? does ecc cover them or mark sectors as bad? i think, i only had this once before with Bloody Bride. it was a bit difference in a last half of sub-header, by a repetitive pattern, ecc covered.

[Dremora]

are they in header/subheader or body?

They can occur everywhere.

[xenogears]

Thanks for the replies!
If I knew earlier I wouldn't have wasted so much time on those "faulty" discs.
BTW, I scan the image with CD Mage and up until now when it reported corrupted sectors I deleted the dump, so CD Mage has never altered any of my dumps. I thought than the scan with CD Mage was mandatory for non-PSX CD games!

From now on, I won't delete them but I'll post the dumps with corrupted sectors/bad headers in the dump forum (and not the "New disc" function) so that a mod can decide if it can be accepted.

A basic question: if my disc has a corrutions error due to bad mastering, is it suitable for the database in the first place? It's very unlikely that many other identical game discs have the same mastering error so I think we should not submit them in the database and wait for a proper copy to be dumped. Just my thought!

[StateS]

Here is the fix log for the version of Gex that I own:

psxt001z --fix "Track 01.bin":

Code: Select all

psxt001z by Dremora, v0.20 beta 13 derus fix

File: Track 01.bin
Size (bytes):   353877216
From image:     404365248
Size (sectors): 150458
From image:     171924
EDC in Form 2 sectors: YES
System area: US EDC

Checking data...
Sector 150308: Sync (fixed), Header (fixed), Form 2 Data/EDC (can't fix)
Sector 150309: Sync (fixed), Header (fixed)
Sector 150310: Sync (fixed), Header (fixed)
Sector 150311: Sync (fixed), Header (fixed)
Sector 150312: Sync (fixed), Header (fixed)
Sector 150313: Sync (fixed), Header (fixed)
Sector 150314: Sync (fixed), Header (fixed)
Sector 150315: Sync (fixed), Header (fixed)
Sector 150316: Sync (fixed), Header (fixed)
Sector 150317: Sync (fixed), Header (fixed)
Sector 150318: Sync (fixed), Header (fixed)
Sector 150319: Sync (fixed), Header (fixed)
Sector 150320: Sync (fixed), Header (fixed)
Sector 150321: Sync (fixed), Header (fixed)
Sector 150322: Sync (fixed), Header (fixed)
Sector 150323: Sync (fixed), Header (fixed)
Sector 150324: Sync (fixed), Header (fixed)
Sector 150325: Sync (fixed), Header (fixed)
Sector 150326: Sync (fixed), Header (fixed)
Sector 150327: Sync (fixed), Header (fixed)
Sector 150328: Sync (fixed), Header (fixed)
Sector 150329: Sync (fixed), Header (fixed)
Sector 150330: Sync (fixed), Header (fixed)
Sector 150331: Sync (fixed), Header (fixed)
Sector 150332: Sync (fixed), Header (fixed)
Sector 150333: Sync (fixed), Header (fixed)
Sector 150334: Sync (fixed), Header (fixed)
Sector 150335: Sync (fixed), Header (fixed)
Sector 150336: Sync (fixed), Header (fixed)
Sector 150337: Sync (fixed), Header (fixed)
Sector 150338: Sync (fixed), Header (fixed)
Sector 150339: Sync (fixed), Header (fixed)
Sector 150340: Sync (fixed), Header (fixed)
Sector 150341: Sync (fixed), Header (fixed)
Sector 150342: Sync (fixed), Header (fixed)
Sector 150343: Sync (fixed), Header (fixed)
Sector 150344: Sync (fixed), Header (fixed)
Sector 150345: Sync (fixed), Header (fixed)
Sector 150346: Sync (fixed), Header (fixed)
Sector 150347: Sync (fixed), Header (fixed)
Sector 150348: Sync (fixed), Header (fixed)
Sector 150349: Sync (fixed), Header (fixed)
Sector 150350: Sync (fixed), Header (fixed)
Sector 150351: Sync (fixed), Header (fixed)
Sector 150352: Sync (fixed), Header (fixed)
Sector 150353: Sync (fixed), Header (fixed)
Sector 150354: Sync (fixed), Header (fixed)
Sector 150355: Sync (fixed), Header (fixed)
Sector 150356: Sync (fixed), Header (fixed)
Sector 150357: Sync (fixed), Header (fixed)
Sector 150358: Sync (fixed), Header (fixed)
Sector 150359: Sync (fixed), Header (fixed)
Sector 150360: Sync (fixed), Header (fixed)
Sector 150361: Sync (fixed), Header (fixed)
Sector 150362: Sync (fixed), Header (fixed)
Sector 150363: Sync (fixed), Header (fixed)
Sector 150364: Sync (fixed), Header (fixed)
Sector 150365: Sync (fixed), Header (fixed)
Sector 150366: Sync (fixed), Header (fixed)
Sector 150367: Sync (fixed), Header (fixed)
Sector 150368: Sync (fixed), Header (fixed)
Sector 150369: Sync (fixed), Header (fixed)
Sector 150370: Sync (fixed), Header (fixed)
Sector 150371: Sync (fixed), Header (fixed)
Sector 150372: Sync (fixed), Header (fixed)
Sector 150373: Sync (fixed), Header (fixed)
Sector 150374: Sync (fixed), Header (fixed)
Sector 150375: Sync (fixed), Header (fixed)
Sector 150376: Sync (fixed), Header (fixed)
Sector 150377: Sync (fixed), Header (fixed)
Sector 150378: Sync (fixed), Header (fixed)
Sector 150379: Sync (fixed), Header (fixed)
Sector 150380: Sync (fixed), Header (fixed)
Sector 150381: Sync (fixed), Header (fixed)
Sector 150382: Sync (fixed), Header (fixed)
Sector 150383: Sync (fixed), Header (fixed)
Sector 150384: Sync (fixed), Header (fixed)
Sector 150385: Sync (fixed), Header (fixed)
Sector 150386: Sync (fixed), Header (fixed)
Sector 150387: Sync (fixed), Header (fixed)
Sector 150388: Sync (fixed), Header (fixed)
Sector 150389: Sync (fixed), Header (fixed)
Sector 150390: Sync (fixed), Header (fixed)
Sector 150391: Sync (fixed), Header (fixed)
Sector 150392: Sync (fixed), Header (fixed)
Sector 150393: Sync (fixed), Header (fixed)
Sector 150394: Sync (fixed), Header (fixed)
Sector 150395: Sync (fixed), Header (fixed)
Sector 150396: Sync (fixed), Header (fixed)
Sector 150397: Sync (fixed), Header (fixed)
Sector 150398: Sync (fixed), Header (fixed)
Sector 150399: Sync (fixed), Header (fixed)
Sector 150400: Sync (fixed), Header (fixed)
Sector 150401: Sync (fixed), Header (fixed)
Sector 150402: Sync (fixed), Header (fixed)
Sector 150403: Sync (fixed), Header (fixed)
Sector 150404: Sync (fixed), Header (fixed)
Sector 150405: Sync (fixed), Header (fixed)
Sector 150406: Sync (fixed), Header (fixed)
Sector 150407: Sync (fixed), Header (fixed)
Sector 150408: Sync (fixed), Header (fixed)
Sector 150409: Sync (fixed), Header (fixed)
Sector 150410: Sync (fixed), Header (fixed)
Sector 150411: Sync (fixed), Header (fixed)
Sector 150412: Sync (fixed), Header (fixed)
Sector 150413: Sync (fixed), Header (fixed)
Sector 150414: Sync (fixed), Header (fixed)
Sector 150415: Sync (fixed), Header (fixed)
Sector 150416: Sync (fixed), Header (fixed)
Sector 150417: Sync (fixed), Header (fixed)
Sector 150418: Sync (fixed), Header (fixed)
Sector 150419: Sync (fixed), Header (fixed)
Sector 150420: Sync (fixed), Header (fixed)
Sector 150421: Sync (fixed), Header (fixed)
Sector 150422: Sync (fixed), Header (fixed)
Sector 150423: Sync (fixed), Header (fixed)
Sector 150424: Sync (fixed), Header (fixed)
Sector 150425: Sync (fixed), Header (fixed)
Sector 150426: Sync (fixed), Header (fixed)
Sector 150427: Sync (fixed), Header (fixed)
Sector 150428: Sync (fixed), Header (fixed)
Sector 150429: Sync (fixed), Header (fixed)
Sector 150430: Sync (fixed), Header (fixed)
Sector 150431: Sync (fixed), Header (fixed)
Sector 150432: Sync (fixed), Header (fixed)
Sector 150433: Sync (fixed), Header (fixed)
Sector 150434: Sync (fixed), Header (fixed)
Sector 150435: Sync (fixed), Header (fixed)
Sector 150436: Sync (fixed), Header (fixed)
Sector 150437: Sync (fixed), Header (fixed)
Sector 150438: Sync (fixed), Header (fixed)
Sector 150439: Sync (fixed), Header (fixed)
Sector 150440: Sync (fixed), Header (fixed)
Sector 150441: Sync (fixed), Header (fixed)
Sector 150442: Sync (fixed), Header (fixed)
Sector 150443: Sync (fixed), Header (fixed)
Sector 150444: Sync (fixed), Header (fixed)
Sector 150445: Sync (fixed), Header (fixed)
Sector 150446: Sync (fixed), Header (fixed)
Sector 150447: Sync (fixed), Header (fixed)
Sector 150448: Sync (fixed), Header (fixed)
Sector 150449: Sync (fixed), Header (fixed)
Sector 150450: Sync (fixed), Header (fixed)
Sector 150451: Sync (fixed), Header (fixed)
Sector 150452: Sync (fixed), Header (fixed)
Sector 150453: Sync (fixed), Header (fixed)
Sector 150454: Sync (fixed), Header (fixed)
Sector 150455: Sync (fixed), Header (fixed)
Sector 150456: Sync (fixed), Header (fixed)
Sector 150457: Sync (fixed), Header (fixed)

Subheaders count:
00 00 08 00: 76091
00 00 09 00: 1
00 00 20 00: 4
00 00 89 00: 35
      Other: 74327

Form 1 sectors: 140185
Form 2 sectors: 10273
 "Bad" headers: 1

Checking postgap...
Postgap type: Form 2

Sector 150308: Form 2 Subheader (fixed), Form 2 Data (fixed), Form 2 EDC (fixed)
Sector 150309: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150310: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150311: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150312: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150313: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150314: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150315: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150316: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150317: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150318: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150319: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150320: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150321: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150322: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150323: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150324: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150325: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150326: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150327: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150328: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150329: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150330: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150331: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150332: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150333: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150334: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150335: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150336: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150337: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150338: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150339: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150340: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150341: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150342: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150343: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150344: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150345: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150346: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150347: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150348: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150349: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150350: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150351: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150352: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150353: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150354: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150355: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150356: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150357: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150358: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150359: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150360: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150361: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150362: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150363: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150364: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150365: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150366: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150367: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150368: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150369: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150370: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150371: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150372: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150373: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150374: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150375: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150376: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150377: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150378: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150379: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150380: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150381: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150382: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150383: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150384: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150385: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150386: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150387: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150388: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150389: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150390: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150391: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150392: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150393: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150394: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150395: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150396: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150397: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150398: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150399: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150400: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150401: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150402: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150403: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150404: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150405: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150406: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150407: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150408: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150409: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150410: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150411: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150412: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150413: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150414: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150415: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150416: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150417: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150418: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150419: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150420: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150421: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150422: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150423: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150424: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150425: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150426: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150427: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150428: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150429: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150430: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150431: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150432: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150433: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150434: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150435: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150436: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150437: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150438: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150439: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150440: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150441: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150442: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150443: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150444: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150445: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150446: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150447: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150448: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150449: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150450: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150451: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150452: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150453: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150454: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150455: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150456: Form 2 Subheader (fixed), Form 2 EDC (fixed)
Sector 150457: Form 2 Subheader (fixed), Form 2 EDC (fixed)

BTW, if fix is not to be used, then why ask for it to be used in the dumping guide? Oo

What's the danger in fixing the errors though? When can one be sure if they are mastering errors, or dump errors?

[Dremora]

Are you sure you have cut off 2nd track pregap from the data track?