Baslinux mailing list

[Stephen Clement <s.clement AT sympatico.ca>]

sindi keesan wrote:

> > > > Is copy protection something at the very end of the disk which 
> > > > would explain why I got 10 pages of identical error messages while 
> > > > copying the final track?  And only if I copied to the very end and 
> > > > recorded it all successfully would the copy protection end up on 
> > > > the copy of teh CD and keep it from playing, while the copy I made 
> > > > on the incompatible burner, with lots of errors, so bad that 
> > > > cdrecord quit after recording just the first 6 of 36 files, would 
> > > > play them okay (no copy protection even got onto the disk).
> > >
> > >
> > > Yes, copy protection is usually is the cause of tons of error 
> > > messages near the end of the CD. Although like I said below the 
> > > problem is probably not copy protection. I have no idea why cdrecord 
> > > is having problems though.
> > >
> > > > This CD also does not play on one CD deck.  I will try copying a 
> > > > different CD and make a cassette tape of this one.
> > > >
> > > > So copy protection explains many things, including why the wav 
> > > > files were playable on hard drive but not on CD.
> >
> > > > If I were to record all but the final track might it play?
> > >
> > >
> > > Don't know.
>
> > > Most CD's that you buy in stores have some form of copy protection 
> > > logo. Look on the back of the CD especially and inside the cover. 
> > > Note, I'm talking about Canadian/American CD's here and have no idea 
> > > what CD's are like wherever you may live.
> I live in the US near Canada (Michigan).

Cool, I'm from Canada (Hamilton, Ontario which is near Toronto)

> The next three CDs I tried to rip also gave me lots of identical 
> errors on the very last track.  I don't see anything about protection 
> on them.

Ok, then your problem is in cdda2wav.

> cdda2wav -J told me something about copy-permitted.

That's normal.

> Some online reading led me to the fact that other people have had this 
> problem and it is due to an intentionally erroneous checksum embedded 
> in the last track which causes it to go in loops and time out.  
> cdparanoia and cdda2wav have the same problem.  (Have not tried DOS 
> cd2wav on it). Someone said it is possible to copy all but the last 
> track so I am currently attempting to record the first halves of three 
> different CDs onto one blank as an experiment.  I hope Bach, von 
> Weber, and Wynton Marsalis like each other.

Ok, hope to find out what's going on :) .

> I will rip (copy from CD to wav) the first track of any CD first to 
> see if the whole CD is copyable and eventually figure out which 
> company besides Sony and D. Gram. to avoid copying.  I wonder if this 
> lost them sales.

Sony recently has been using alot of copy protection, although I don't 
know about the other record labels.

> During cdrecord on this 2X drive I have some other error message about 
> Drive returns wrong startsec (0) using -150 but eventually after a 
> long pause at 1 MB it is slowly recording. (The drive has only about 
> 2000 jitter and works with cdda2wav).  Other people had this message 
> and hypothesized bad medium (I tried several blanks) or drive going 
> bad (in my case I know it is worn out and we had to clean it to get it 
> to work at all for data CDs).  I will find out if this worked.

Ah! 2000 jitter! That's not very good you know, even my ancient drives 
get less than 50 jitter.

> cdrecord -v -dao *.wav
>
> (I have speed and dev in profile and default fifo).
> Without -dao it will add 2 sec gap between tracks.
>
> I have finished nearly 2 tracks out of 14 in only about 10 minutes.  
> Last time we recorded a data CD in only about 40 minutes.  Better than 
> the 3 hour cdda2wav copy using an 8X reader.
>
> So far three out of four CDs have had copy protection on the last 
> track but I read that some company was scattering it at random and it 
> was interfering with even playing music CDs on a computer drive.

Yep, they're doing that now. Especially Sony.

> The 1991 Philips CD copied the last track, 1992 Sony and 1992 Deutsche 
> Grammophon did not and there is no indication on the CD of copy 
> protection that I could find.
>
> To  make life more interesting, play and workbone also would not work 
> on the first few tries then suddenly worked perfectly with no reboot 
> or software changes - maybe the sound card warmed up?  And the CD-ROM 
> drives do not appear (either of them) to be connected to the sound 
> cable but we got sound out the front of one of them.

Odd. Just plain odd.

> And the bare-i kernel would not boot (crc error) until my partner 
> changed the boot drive from D: (DOS) back to C: (Windows) with fdisk, 
> though the Slackware kernel booted properly.  He has been playing with 
> MS DOS 7.1 standalone version and trying out FreeDOS CD-ROM driver, I 
> think.  Or maybe the latest FreeDOS himem.exe, since the previous one 
> puts 77s in unwanted places on one computer.  I still could not boot 
> even if I hit F5 to bypass system files.  Something strange going on.
>
> I may try making a CD copy of all but the last track of my friend's CD.
>
> One suggestion was to write with a felt-tipped pen around the margins 
> of a copy protected CD to defeat the copy protection.  How would that 
> work?

Don't know for sure, although sometimes they record a seperate track at 
the end, and they hide it in there.

> A simpler solution is to go back to taping library CDs.  Around here 
> we find lots of good quality used tapes at the curb.  The library 
> probably would not appreciate us using felt-tipped pens on their CDs.

Tapes just aren't as good quality in my opinion, though.

> Could one record from line out of the sound card (or a receiver 
> playing an LP) to line in of another (or maybe the same?) computer to 
> get an analog sound file - .wav ? - and then use cdrecord to make an 
> audio CD from the .wav file?  Supposedly the quality would not be as 
> good, but no worse than a tape I hope.  It cannot be any slower than 
> what I am doing now.
>
> I am on track 7 of 14 and could be done by midnight.

Well its 2AM here. Hope you get back to the list by the morning.

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Thanks,
Stephen Clement