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saramibreak / DiscImageCreator

This is the disc (CD, GD, DVD, HD-DVD, BD, GC/Wii, XBOX, XBOX 360) and disk (Floppy, MO, USB etc) image creation tool
http://forum.redump.org/topic/10483/discimagecreator/
Apache License 2.0
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Generated Track0.bin data is inconsistent when dump the same CD twice #218

Closed OldMadMan closed 1 year ago

OldMadMan commented 1 year ago

Version 32 bit, AnsiBuild, 20230608T140750

Describe the bug I used the same command to dump the same CD twice, and the two Track0.bin files I got were not exactly the same, their sizes were inconsistent. Several other files (such as Track AA.bin) generated twice have the same content. Is this result normal?

Screenshots cd G JA_C0251.bin 72 /d8 /c2 1000 /q /ns /s 2

Disc title Microsoft TechNet Subscription Disc 0251

Disc ringcode X11-11122

URL N/A

Log file

First time dump Second time dump

saramibreak commented 1 year ago

Is this result normal?

Yes. Track 0.bin is dumped using a kind of cache command, so a range of the dumping is different every time.

OldMadMan commented 1 year ago

Owner

Thank you very much, please allow me to ask one more small question, then I will close this issue myself.

I have dumped over 1,000 Microsoft software CDs with various versions of DIC so far. Among the dump results, all CDs have some error written inside SubError.txt . Does this mean that all the CD are bad? Or has no real impact? Is there a disc in the world without suberror?

Thanks.

saramibreak commented 1 year ago

no real impact?

Yes. Subchannel often reads error. This app fixes these errors.

Is there a disc in the world without suberror?

No. Subchannel errors are to be expected for CD.