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[sindi keesan <keesan AT sdf.lonestar.org>]

I got a blank copy and I checked and it was not upside down.
Hal said I needed a '-' in there somewhere but that is not in the notes he 
sent me and it worked last time.  Is it possible I was using a CD-ROM that 
was previously messed up?  I got the same pages and pages of error 
messages trying to read the 'recorded' CD-ROM as I did trying to read it 
before recording it and I know we messed up one before (trying to copy 'on 
the fly' with Win98, a file larger than RAM).

This is a CD-R not RW.  The burner is listed by linux as CD-RW but online 
it seems to be a CD-R 2x write 24x read.  Were there 2X RW models?  I have 
not burned CDs before except for one previous copy of SW71 installation 
disk on this same computer and I am using the same .raw file as before. 
(We also copied one data and one audio CD with Roxio in Windows).

How can I analyze a CD-ROM to learn what happened to it? 
I don't want to keep repeating my mistake.

Does the 'dummy' mode detect if the disk is not recordable?
Hal suggested switches -toc and -inq.

On Fri, 22 Oct 2004, sindi keesan wrote:

> With help from Christof and Hal I was able a while ago to burn exact copies 
> of data CDs.  A quick summary.
>
> 1.  Install /ap1/cdutils.tgz which contains reaadcd and cdrecord and mkeisofs 
> and documentation.
>
> 2.  Boot the bl2 kernel with loadlin appending to the line you boot with 
> hdc=ide-scsi  (or substitute for hdc the CD-R drive you use).
>
> 3.  Insmod the following modules (copy them from the SW71 2.2.16/modules 
> directory (misc or scsi?):
> insmod ide-cd ignore=hdc  (substitute your drive for hdc)
> insmod scsi-mod
> insmod sg
> insmod sr_mod
> insmod loop
> insmod ide-scsi
>
> This last will tell you it detected a CD-ROM sr0 at scsi0.
>
> These let you emulate a scsi drive with an ide drive because cdrecord was 
> written for a scsi CD-ROM drive.  (We had one once).
>
> 4.  You can type cat /proc/scsi/scsi to be told what attached scsi devices 
> you have with Channel:00 Id:00 Lun:00  (they may not be 00 if you have other 
> scsi devices?).  Or cdrecord -scanbus will give similar info.
>
> 5.  To copy an entire CD first read it to a file:
> readcd  dev=0,0,0 f=/tmp/filename.raw   (this creates the file of this name).
>
> 6.  To write this file to a CD:
> cdrecord -v fs=6m speed=2 dev=0,0,0 filename.raw
> Before actually burning a CD the first time run this with -dummy and
> stop it before the 10 sec countdown 'last chance to quit'.  If you forget to 
> stop it the next record won't work until you type cdrecord -reset.
>
> Explanations:
> -v  verbose, tells you what is happening as it records
> - dummy trial runthrough with laser turned off
> dev=0,0,0  - the first and only scsi device but if you have others change
> speed = 2  (my recorder is an early one, change if you have faster;
> the man page says if problems you can even try speed=0)
> fs=6m  fifo (buffer?) 6 megabytes.  Default is 4.
>
> Hal said in order to eliminate the need to write dev=0,0,0 for
> the reader and writer to put into /etc/profile
> export CDR_device=0,0,0
>
> Can I also put in
> export CDR_SPEED=2
> export CDR_FIFOSIZE=6  (or just omit fs=6m to get default 4MB?)
>
> That would leave me: cdrecord -v filename.raw
>
> Instead of an entire CD it is possible to record single tracks (see the 
> manual, something like track1...track2?).  Can someone explain further?
>
> The man page lists many other switches.  -eject will eject the CD after
> you are done recording.  -data is the default.
>
> Question.  To record an audio CD (entire) rather than a data CD, if I am not 
> doing individual tracks or .wav files, do I need the -audio switch or do I 
> just record as above?  (i. e., is readcd just copying over a disk image to 
> the filename.raw file, in which case all CDs should look the same to it).
>
> I am at 498 of 650MB of a copy of the SW71 installation CD.
>
> Christof suggests a script for the insmods.  Does it need any pauses in it 
> like the plip script did?   I will call it cdr.
>
>
> An easy way to copy CDs without backends:
>
> Get and install the modules and cdutils.tgz
> Put the export lines in /etc/profile for device, speed and fifosize
>
> Then each time you want to write CDs:
> bootcdr  (make a batch file to boot with  hdc=ide-scsi)
> cdr (the insmod script, or if you will be writing lots of CDs put in rc.)
> readcd f=/tmp/filename.raw   (first put CD to copy from into CD-R drive)
> cdrecord -v filename.raw     (first put CD to record onto into the drive)
>
> This is assuming you are copying from the same cdr device.  What would I 
> change to copy from a CD-ROM drive at hdb?  I have a 40X CD-ROM drive
> and the CD-R drive is only 24X.  Also it would save time when copying from 
> several CDs to one not to be swapping back and forth.
>
> mount /dev/hdb /cd
> readcd dev=cd f=/tmp/filename.raw
>    ???  I am not familiar with using scsi anything.
>    I don't know why I did not need to mount the CD-R drive.
>
> I have two nice Bach CDs I will copy as soon as I hear about -audio switch. 
> Only 35 min per copy at 2X, slightly faster than taping if you include the 
> time to set this up.
>
> Thanks again to Christof and Hal.  Sometime soon I will venture into linux 
> scanner software.  Can't be any scarier than this was.
>
>
> keesan AT sdf.lonestar.org
> SDF Public Access UNIX System - http://sdf.lonestar.org
> _______________________________________________
> BasLinux mailing list
> BasLinux AT lists.ibiblio.org
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keesan AT sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org