[Feature request] Option to require that all sectors have been read correctly twice

[thegawin]

There are some modern optical drives (with MT1862N) that support scrambled mode.

The issue is these drives tend to produce bad hashes even on single data track cd with no protection. As drives have probably bad c1/c2, I think this feature would be good workaround.

(Also asus jb8 often can fall into fall positives with C2 errors.)

[saramibreak]

There are some modern optical drives (with MT1862N) that support scrambled mode.

What drive is it?

[thegawin]

These are constructions based on MT1862AN/MT1862N chipset (DATA_SUB_C2 + BE_CDDA):

• GH24NSC0 ( firmware LK00) <- I have this one
• GH24NSD1 (LG00) <- used by olofolleola4
• iHAS 124 B (AL0R) <- also from olo

I've noticed they probably don't support FlushDriveCache (last sector, this may be problem) and also OEM versions of this drives (asus) have this locked in firmware.

[thegawin]

Started comparing resulting bin files with hexeditior. Will update if I'm gonna find something interesting.

So far seems like single track data CDs are giving bad hashes due to last sector being wrong. After copying it from plextor/asus jb8 I can get good hash.

[saramibreak]

So far seems like single track data CDs are giving bad hashes due to last sector being wrong.

Because these drives can't read the lead-out sector.

[thegawin]

Let discard problem of lead-out for now. Maybe Ribshark would have idea for that. Picked mixed mode CD without leadout:

Good dump (from plextor):

<rom name="drive_test (Track 01).bin" size="272276928" crc="2fa5fb66" md5="3c98bc5d0d042d1535df01bf87c3998f" sha1="cc3d2b3653d5008937341ea659303228f0a1e3e9" />
<rom name="drive_test (Track 02).bin" size="16012416" crc="b35fb803" md5="558f4e57e82cf4c19f318ab152d44ca6" sha1="09ffb636e1e020b8855189a62d781832c07228a2" />
<rom name="drive_test (Track 03).bin" size="27339648" crc="64e0cdd1" md5="49aabe0a2d30dcde209cbf4f84051e97" sha1="2d2abf06d9de4212a04b4f3fc7d6de7f698876a7" />
<rom name="drive_test (Track 04).bin" size="25185216" crc="c156d138" md5="bcc4b0c52d9a47aa7e8197b29a4b9ffe" sha1="cab44f9639c606d1fcbecac171031f05ee0efcb0" />
<rom name="drive_test (Track 05).bin" size="25427472" crc="d7121527" md5="eac10e11656624a66fca94095a2b5cf5" sha1="127a291226c2a1fe96f190dd1c576b705a15d933" />
<rom name="drive_test (Track 06).bin" size="27144432" crc="ffc48534" md5="b12ff725a48fd17b80aebc2c5be5d939" sha1="1e9c67ab78a59a027ecfd7cab0ecd643239e58ee" />
<rom name="drive_test (Track 07).bin" size="24785376" crc="e30e14c1" md5="4ef8741b3255b246b28708cbb40aeb66" sha1="5a62eedf29ef01afbe541d144ea77fc220912fd6" />
<rom name="drive_test (Track 08).bin" size="25963728" crc="8d973cbc" md5="88af204fa685297396797f926de835ab" sha1="7c12e74777ddee5522f3480b53cca2637dd9dd66" />
<rom name="drive_test (Track 09).bin" size="26563488" crc="08eb2b64" md5="ee96a48e14bf91b09fd35d7282ec9ef1" sha1="9c87c24757633be296aecd432ba3c70ad2539d07" />
<rom name="drive_test (Track 10).bin" size="26173056" crc="01ceee3d" md5="845fee9621dd5fe809b5478c80286491" sha1="b13aa4ace19e1cb22e3795958ce1cd5c110bd047" />
<rom name="drive_test (Track 11).bin" size="24298512" crc="ab2f593a" md5="947e1ddfc588fcc7412ffda82ed9c822" sha1="6a2ccdbab031e4b0150bcb37067694747626077a" />

First try:

<rom name="drive_test (Track 01).bin" size="272276928" crc="2fa5fb66" md5="3c98bc5d0d042d1535df01bf87c3998f" sha1="cc3d2b3653d5008937341ea659303228f0a1e3e9" />
<rom name="drive_test (Track 02).bin" size="16012416" crc="b35fb803" md5="558f4e57e82cf4c19f318ab152d44ca6" sha1="09ffb636e1e020b8855189a62d781832c07228a2" /> 
<rom name="drive_test (Track 03).bin" size="27339648" crc="64e0cdd1" md5="49aabe0a2d30dcde209cbf4f84051e97" sha1="2d2abf06d9de4212a04b4f3fc7d6de7f698876a7" />
<rom name="drive_test (Track 04).bin" size="25185216" crc="c156d138" md5="bcc4b0c52d9a47aa7e8197b29a4b9ffe" sha1="cab44f9639c606d1fcbecac171031f05ee0efcb0" />
<rom name="drive_test (Track 05).bin" size="25427472" crc="d7121527" md5="eac10e11656624a66fca94095a2b5cf5" sha1="127a291226c2a1fe96f190dd1c576b705a15d933" />
<rom name="drive_test (Track 06).bin" size="27144432" crc="ffc48534" md5="b12ff725a48fd17b80aebc2c5be5d939" sha1="1e9c67ab78a59a027ecfd7cab0ecd643239e58ee" />
<rom name="drive_test (Track 07).bin" size="24785376" crc="e30e14c1" md5="4ef8741b3255b246b28708cbb40aeb66" sha1="5a62eedf29ef01afbe541d144ea77fc220912fd6" />
<rom name="drive_test (Track 08).bin" size="25963728" crc="8d973cbc" md5="88af204fa685297396797f926de835ab" sha1="7c12e74777ddee5522f3480b53cca2637dd9dd66" />
<rom name="drive_test (Track 09).bin" size="26563488" crc="08eb2b64" md5="ee96a48e14bf91b09fd35d7282ec9ef1" sha1="9c87c24757633be296aecd432ba3c70ad2539d07" />
<rom name="drive_test (Track 10).bin" size="26173056" crc="01ceee3d" md5="845fee9621dd5fe809b5478c80286491" sha1="b13aa4ace19e1cb22e3795958ce1cd5c110bd047" />
<rom name="drive_test (Track 11).bin" size="24298512" crc="ab2f593a" md5="947e1ddfc588fcc7412ffda82ed9c822" sha1="6a2ccdbab031e4b0150bcb37067694747626077a" />

second try:

<rom name="drive_test (Track 01).bin" size="271921776" crc="8a574124" md5="71e269ff0ae936045a365c44e937e506" sha1="56226c3ed9faa3bb7eca01ba506faf37f979722d" />
<rom name="drive_test (Track 02).bin" size="16713312" crc="1458bb7a" md5="613c77a0e3bb9a7bce44f3f2dd3a5e76" sha1="0882ca05eadfb2785456905be7da2d1e7cf5f387" />
<rom name="drive_test (Track 03).bin" size="27339648" crc="9b7b30d6" md5="0ac4eca982f7e0805b65e0134b9832b1" sha1="a553e252b813b575f6ec264bac71cfd240c17a49" />
<rom name="drive_test (Track 04).bin" size="25185216" crc="521a4796" md5="a490b184c0b616a79710fbb5934ec3f5" sha1="9a2d69215af4c73d8d31a3995779d12c86b02a1c" />
<rom name="drive_test (Track 05).bin" size="25427472" crc="9b1c1833" md5="28c9d09efe751750f17429b3d150c510" sha1="66c0185ebd42d7900db0cfcb9b4bd6f3403146ee" />
<rom name="drive_test (Track 06).bin" size="26798688" crc="e50db95d" md5="5c10af77e0893f52f4cebc2de18234dc" sha1="1850f2b249a31b4126ff49fcb9badaac37e20a39" />
<rom name="drive_test (Track 07).bin" size="24785376" crc="e30e14c1" md5="4ef8741b3255b246b28708cbb40aeb66" sha1="5a62eedf29ef01afbe541d144ea77fc220912fd6" />
<rom name="drive_test (Track 08).bin" size="25963728" crc="8d973cbc" md5="88af204fa685297396797f926de835ab" sha1="7c12e74777ddee5522f3480b53cca2637dd9dd66" />
<rom name="drive_test (Track 09).bin" size="26563488" crc="08eb2b64" md5="ee96a48e14bf91b09fd35d7282ec9ef1" sha1="9c87c24757633be296aecd432ba3c70ad2539d07" />
<rom name="drive_test (Track 10).bin" size="26173056" crc="01ceee3d" md5="845fee9621dd5fe809b5478c80286491" sha1="b13aa4ace19e1cb22e3795958ce1cd5c110bd047" />
<rom name="drive_test (Track 11).bin" size="24298512" crc="ab2f593a" md5="947e1ddfc588fcc7412ffda82ed9c822" sha1="6a2ccdbab031e4b0150bcb37067694747626077a" />

The reproducibility of bad hashes make me feel this may be something with reading QTOC.

[saramibreak]

Are these results dumped using DIC? If yes, plz upload logs.

[thegawin]

I hope all (used linux).
logs.zip

[saramibreak]

DiscImageCreator_test.tar.gz
improved subQ channel fixing

[thegawin]

Thanks, I will test and post new topic to clean up a bit. I see I've made some mistakes when copying hashes.