From: Wojtek Pilorz <wpilorz@bdk.pl>
To: Bruce Blinn <blinn@MissionCriticalLinux.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
root@chaos.analogic.com,
Masoud Sharbiani <masu@cr213096-a.rchrd1.on.wave.home.com>,
linux-kernel@vger.kernel.org
Subject: Re: Reading Windows CD on Linux 2.4.6
Date: Tue, 18 Sep 2001 13:04:43 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.21.0109181248480.22180-100000@celebris.bdk.pl> (raw)
In-Reply-To: <3BA6791A.616636CE@MissionCriticalLinux.com>
On Mon, 17 Sep 2001, Bruce Blinn wrote:
> Date: Mon, 17 Sep 2001 15:28:42 -0700
> From: Bruce Blinn <blinn@MissionCriticalLinux.com>
> To: Alan Cox <alan@lxorguk.ukuu.org.uk>
> Cc: root@chaos.analogic.com,
> Masoud Sharbiani <masu@cr213096-a.rchrd1.on.wave.home.com>,
> linux-kernel@vger.kernel.org
> Subject: Re: Reading Windows CD on Linux 2.4.6
>
> Alan Cox wrote:
> >
> > > Here are the results of the methods that were suggested for producing a
> > > CD image. They all seem to fail at the same place because the resulting
> > > file is the same size.
> > >
> > > # dd if=/dev/cdrom of=/tmp/cd1.iso
> > > dd: /dev/cdrom: Input/output error
> > > 1440+0 records in
> > > 1440+0 records out
> >
> > Bad CD image - or that is all the data on it. If its bad blocks you can tell
> > dd to continue past bad blocks and pad them with zero - handy for rescueing
> > uncompressed tape backups
>
> I do not think the disk is missing data or that there are any bad
> blocks. The reason I say this is because I can access every file on the
> disk when the CD is mounted as an iso9660 file system on a 2.2.19
> kernel. I compared the files with the originals and they are identical.
Maybe it is not a single session disk?
Could you try
cdrecord -toc dev=x,y
where x,y are numbers returned for your SCSI (either native or emulated)
device by
cdrecord -scanbus
I have never played with multisession disks so far, but I don't think dd
could read anything more than the first track ...
>
> The only reason I found out dd would not copy the disk is because Masoud
> asked for an image.
> I tried using dd to copy a much larger CD (150 Mb) and it fails at the
> same place and the resulting file is the same size (737280 bytes). So
> it fails long before the end of the data.
This would again make me suspect Win software does not produce
single-session disks ...
>
> By the way, dd works fine when copying other CDs that were not created
> under Windows.
>
> Thanks,
> Bruce
>
Best regards,
Wojtek
next prev parent reply other threads:[~2001-09-18 11:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-14 20:14 Reading Windows CD on Linux 2.4.6 Bruce Blinn
2001-09-15 0:11 ` Masoud Sharbiani
2001-09-17 19:39 ` Bruce Blinn
2001-09-17 19:50 ` Mike Fedyk
2001-09-17 19:55 ` Richard B. Johnson
2001-09-17 21:22 ` Bruce Blinn
2001-09-17 21:41 ` Alan Cox
2001-09-17 22:28 ` Bruce Blinn
2001-09-17 23:08 ` H. Peter Anvin
2001-09-17 23:34 ` Mike Fedyk
2001-09-18 11:04 ` Wojtek Pilorz [this message]
2001-09-18 16:09 ` Bruce Blinn
2001-09-18 21:17 ` Bruce Blinn
2001-09-19 5:49 ` Wojtek Pilorz
2001-09-18 2:30 ` Richard B. Johnson
2001-09-18 15:39 ` Bruce Blinn
2001-09-18 16:49 ` Richard B. Johnson
2001-09-18 21:43 ` Bruce Blinn
2001-09-19 13:25 ` Richard B. Johnson
2001-09-18 11:09 ` Wakko Warner
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