Search options (Page 21 of 66)

DIC needs a drive with a 0xD8 reading command support (mostly Plextors) for reading the CDs. It also have a special mode to work with the swapped discs on any drive (when you insert an audio CD, then replace it with your data CD without sending an eject command to the drive).

Yeah, seems to be a new revision (Rev 2).

Welcome, obtain your password here.

(check the spam folder in case there will be no message in your inbox)

Please make sure you read and understand the dumping process and the way you have to submit the dumping logs before posting your dump info.
Dumping_Guides

Feel free to ask question on the forum, or via Discord about how to get started preserving games with Redump:
Discord

It does, but think about audio cds: the data isn't always properly aligned on them. And there are many gapless discs, where the track numbers are only used to navigate inside the one big record.

Or you're just trying to align the data your own way

I think the explanation about the 1st track is always the same and the rest of the disc is always different, so the 1st track should be always aligned properly is correct.

It only takes a long time if the disc is damaged, for the good discs /c2 9999 shouldn't be longer than /c2 1. And if your disc is damaged it's upto you to decide if you want to wait for as good dump as possible or not.

I hope our PC gurus will answer the rest of the questions.

Have you seen the claunia's decoder? https://github.com/discimagechef/DiscImageChef.VideoNow
She says the frames are solid and shouldn't be split between tracks.

The TOC gets updated when you press the "eject" button on the drive or when you send the "eject" command from the operating system. If you want to read the disc as scrambled on a "normal" drive, you need to insert the audio CD, then to swap it with the data CD, the drive will "think" the audio CD is still inserted and show you the data without descrambling.

If your drive supports overreading, you don't need to use swapping to read the audio tracks. But if you want to read the data as scrambled and your drive doesn't support the D8, D9 commands, you need to use swapping.

Maybe you're decoding it wrong? The frame is exactly 19600 bytes and the 1st track should contain exactly 106 frames. But it always has the 2095632 size (for the Color discs), so, if you start with the non-zero byte, you will have an incomplete frame at the end? 106x19600 bytes + 18032 (incomplete frame) at the end? And the 2nd track will have 1568 bytes from that frame?

Look at these 2 tracks. It's a Color disc, it was dumped with /vn, the 1st track starts with the non-zero byte and your PVDTools.exe decodes 106 frames there. But the 2nd track doesn't start with 0x81, 0xe3, 0xe3, 0xc7, 0xc7, 0x81, 0x81, 0xe3. So the 1st track can't start with the non-empty byte here. But if you redump it as /vn 18032, the 2nd track starts properly.

Why was the track type set to audio in the cue?

Means we don't know, you need to test by yourself and report us.

Yes, if you want to be able to read all the sectors as scrambled. You can also burn your own CD with a single 700MB dummy (empty) audio track and use it (but some drives only allow to swap pressed discs to pressed discs and cd-rs to cdrs).

Of course. And if the Audio CD has more sectors than your data+audio disc, you will be able to read the offset-shifted data from leadout even without the overreading into leadout feature.

It doesn't read the actual -5000 to -1100 sectors, it's more of a special command, the drive then reads the TOC area, first pregap and sometimes the main data areas (somewhat random). It's hard to explain, you need to buy a Plextor and test by yourself.

No, these db entries have additional files with a partial subchannel contents.

That's surely a mistake, these need to be added as separate entries. Just look at the Saturn or Mega CD pre-releases - many of them have the same data, but only differ in gaps or have a differently shifted audio.

Read errors or protection. 255/255/255 is FF FF FF, doesn't look like a real value. "160" is also impossible, since the minutes are BCD-coded and it can't be more than 2 digits (i.e. larger than 99).

For the discs with audio tracks it is strongly recommended, for the data-only ones - depends on the protection.