I have an ISO of an audio CD that was created by someone using OS X. I would like to use this ISO in Ubuntu -- ultimately in order to extract the tracks to sound files.

When I attempt to mount the ISO, I get the following message:

>sudo mount -o loop ~/CD.iso /home/user/cdmount
mount: you must specify the filesystem type

How should I do this?

  • 1
    What if you do sudo mount -t iso9660 -o ... or sudo mount -t udf -o ...? ISO9660 and UDF are the most common filesystem types for CD/DVD images.
    – muru
    Jan 21, 2016 at 17:15
  • 1
    Please edit your post to add the output of file -k ~/CD.iso.
    – muru
    Jan 21, 2016 at 17:22
  • 3
    I don't know if that's possible. Audio CDs do not have filesystems, so it is impossible to mount this image. Stricly speaking, it is not even an ISO image at all (because it is not an image of an ISO9660 filesystem), just a raw data dump.
    – fkraiem
    Jan 21, 2016 at 17:30
  • 1
    You can't make an iso of an audio cd. You can make a raw image file plus a .cue sheet that describes the tracks. Do you have the .cue sheet?
    – psusi
    Jan 22, 2016 at 2:12
  • 2
    dupe: askubuntu.com/questions/102406/…
    – Rinzwind
    Jan 22, 2016 at 7:38

2 Answers 2


Audio CDs do not have file systems for tracks. It is raw data burned to the disc.

What you have isn't an ISO but raw data of the disc. You cannot mount it.

  • 3
    Thank you very much for clarifying that. My goal is to extract the audio tracks from this ISO image of the audio CD. Would you have any ideas on how to approach this?
    – d3pd
    Jan 21, 2016 at 20:05

I am able to play an audio CD rip (from Nero, many many years ago) with this:

mplayer -demuxer rawaudio my_audio_cd_rip.nrg


mpv -demuxer=rawaudio my_audio_cd_rip.nrg

or (after changing the file extension)

play -r 44100 -e signed -b 16 -c 2 -L my_audio_cd_rip.cdda

and to convert it to an MP3:

sox -r 44100 -e signed -b 16 -c 2 -L my_audio_cd_rip.cdda -C 320 my_audio_cd_rip.mp3

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