burncd makes disk that is unmountable

[Dieter]

> > AMD64 running 6.0
> > Drive is:
> >   acd0: DVDR <HL-DT-ST DVDRAM GSA-4160B/A301> at ata0-master UDMA66
> > Media is CD-RW
> > 
> > Burned a 6.2 disk using:
> >   burncd data 6.2-RELEASE-amd64-disc1.iso fixate
> > as suggested in
> >   http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/creating-cds.html
> 
> I don't remember the details, but when I got to 6.1, I found that
> my old burncd parameters would not work and I had to change them.
> 
> I don't remember the details, but I settled upon:
>   /usr/sbin/burncd -v -f /dev/acd0 data FreeBSD62-disc1.iso fixate
> which seems to work find.  Both boots and mounts.  That doesn't look
> materially different from yours, but...

It is defaulting to the correct device.

> > Seemed to go okay.  Disk boots, but I cannot mount it:
> > 
> > fstab entry:
> >   /dev/acd0               /cdrom          cd9660  ro,noauto       0       0
> > 
> > Yields:
> >   g_vfs_done():acd0[READ(offset=32768, length=2048)]error = 5
> > 
> > Tried it with and without "fixate", neither will mount.
> > 
> > Other iso disks (probably burned using NetBSD) mount fine.
> > UFS DVD+RW disks burned under FreeBSD using growisofs mount fine.
> > 
> > Given the error message, I assume that the block/sector at 32768 isn't
> > getting written.

New data:  NetBSD mounts both disks (with and without "fixate") just fine.
So perhaps the problem is with FreeBSD's mount rather than burncd?