[Techtalk] trouble mounting cdrom: no medium found

Conor Daly conor.daly at oceanfree.net
Sun Feb 23 20:03:41 EST 2003

On Sun, Feb 23, 2003 at 10:15:44AM -0600 or so it is rumoured hereabouts, 
txjulie at austin.rr.com thought:
> Conor Daly wrote:
> > 
> > At a wild guess, the CD was written using DirectCD which does _not_
> > produce ISO9660 filesystems.  Instead it makes a "UDF" CD.  'man mount' on
> > _my_ RH72 box says 'udf' is one of the filesystem types available so
> > 
> > mount -t udf /dev/cdrom /mnt/cdrom
> > 
> > _may_ work.  OTOH, can you ask your publisher to create the CD using
> > CDCreator or Nero instead of DirectCD?
> I used to use CDCreator a lot.  My recollection is that it only
> creates UDF filesystems on CD-RWs and not on CD-Rs.  

That's DirectCD that does the UDF stuff.  It's the program that allows the
CDR(W) to be written to as a drive letter under Win32.  It will "format" a
CDRW for UDF but _not_ a CDR.  It will _still_ write UDF packets to the CDR though
but only enough to hold the data being written.  CDCreator, OTOH, does
proper ISO9660 CD mastering and (AIUI) _doesn't_ do UDF.  A UDF CDR(W) can
be "closed" into ISO9660 (Mode 3) by the addition of a toc at the
beginning but this is not necessarily compatible with other OSs. 

Conor Daly <conor.daly at oceanfree.net>

Domestic Sysadmin :-)
  7:03pm  up 110 days,  3:47,  0 users,  load average: 0.00, 0.06, 0.10
  6:55pm  up 7 days,  2:21,  1 user,  load average: 0.13, 0.09, 0.03

More information about the Techtalk mailing list