Can' t mount CD or DVD












1















I' m trying to burn a simple mp3 data CD but I can' t get k3b/brasero/xfburn to work. Basically K3b says 'Please insert an empty or appendable medium', like if there wasn' t a CD in the DVD recorder. Similar error messages are shown with other tools.
However K3b can recognize the DVD drive, because it can show detailed information about it.



$ LANG=C sudo lshw -C disk output



*-cdrom                 
description: DVD-RAM writer
product: DVDRW DVR-K17B
vendor: PIONEER
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/cdrom
logical name: /dev/sr0
version: 1.02
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 status=ready
*-medium
physical id: 0
logical name: /dev/cdrom


I' ve added this configuration to my /etc/fstab file:



# cdrom
/dev/sr0 /media/cdrom0 iso9660 rw,user,noauto,unhide


When I execute:



mount -a


I don' t get any error message.



If I execute:
mount /dev/sr0 /media/cdrom0



I get:
mount: /dev/sr0: can t read superblock



On checking dmesg | tail, I can see:
[ 1021.762622] EXT4-fs (sr0): unable to read superblock
[ 1022.026866] sr 0:0:0:0: [sr0]

[ 1022.026882] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 1022.026890] sr 0:0:0:0: [sr0]

[ 1022.026895] Sense Key : Blank Check [current]
[ 1022.026905] sr 0:0:0:0: [sr0]

[ 1022.026910] Add. Sense: No additional sense information
[ 1022.026917] sr 0:0:0:0: [sr0] CDB:
[ 1022.026921] Read(10): 28 00 00 00 00 00 00 00 01 00
[ 1022.026980] FAT-fs (sr0): unable to read boot sector



Does anyone know how to fix this?










share|improve this question
















bumped to the homepage by Community 3 hours ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.




















    1















    I' m trying to burn a simple mp3 data CD but I can' t get k3b/brasero/xfburn to work. Basically K3b says 'Please insert an empty or appendable medium', like if there wasn' t a CD in the DVD recorder. Similar error messages are shown with other tools.
    However K3b can recognize the DVD drive, because it can show detailed information about it.



    $ LANG=C sudo lshw -C disk output



    *-cdrom                 
    description: DVD-RAM writer
    product: DVDRW DVR-K17B
    vendor: PIONEER
    physical id: 0.0.0
    bus info: scsi@0:0.0.0
    logical name: /dev/cdrom
    logical name: /dev/sr0
    version: 1.02
    capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
    configuration: ansiversion=5 status=ready
    *-medium
    physical id: 0
    logical name: /dev/cdrom


    I' ve added this configuration to my /etc/fstab file:



    # cdrom
    /dev/sr0 /media/cdrom0 iso9660 rw,user,noauto,unhide


    When I execute:



    mount -a


    I don' t get any error message.



    If I execute:
    mount /dev/sr0 /media/cdrom0



    I get:
    mount: /dev/sr0: can t read superblock



    On checking dmesg | tail, I can see:
    [ 1021.762622] EXT4-fs (sr0): unable to read superblock
    [ 1022.026866] sr 0:0:0:0: [sr0]

    [ 1022.026882] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
    [ 1022.026890] sr 0:0:0:0: [sr0]

    [ 1022.026895] Sense Key : Blank Check [current]
    [ 1022.026905] sr 0:0:0:0: [sr0]

    [ 1022.026910] Add. Sense: No additional sense information
    [ 1022.026917] sr 0:0:0:0: [sr0] CDB:
    [ 1022.026921] Read(10): 28 00 00 00 00 00 00 00 01 00
    [ 1022.026980] FAT-fs (sr0): unable to read boot sector



    Does anyone know how to fix this?










    share|improve this question
















    bumped to the homepage by Community 3 hours ago


    This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.


















      1












      1








      1








      I' m trying to burn a simple mp3 data CD but I can' t get k3b/brasero/xfburn to work. Basically K3b says 'Please insert an empty or appendable medium', like if there wasn' t a CD in the DVD recorder. Similar error messages are shown with other tools.
      However K3b can recognize the DVD drive, because it can show detailed information about it.



      $ LANG=C sudo lshw -C disk output



      *-cdrom                 
      description: DVD-RAM writer
      product: DVDRW DVR-K17B
      vendor: PIONEER
      physical id: 0.0.0
      bus info: scsi@0:0.0.0
      logical name: /dev/cdrom
      logical name: /dev/sr0
      version: 1.02
      capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
      configuration: ansiversion=5 status=ready
      *-medium
      physical id: 0
      logical name: /dev/cdrom


      I' ve added this configuration to my /etc/fstab file:



      # cdrom
      /dev/sr0 /media/cdrom0 iso9660 rw,user,noauto,unhide


      When I execute:



      mount -a


      I don' t get any error message.



      If I execute:
      mount /dev/sr0 /media/cdrom0



      I get:
      mount: /dev/sr0: can t read superblock



      On checking dmesg | tail, I can see:
      [ 1021.762622] EXT4-fs (sr0): unable to read superblock
      [ 1022.026866] sr 0:0:0:0: [sr0]

      [ 1022.026882] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
      [ 1022.026890] sr 0:0:0:0: [sr0]

      [ 1022.026895] Sense Key : Blank Check [current]
      [ 1022.026905] sr 0:0:0:0: [sr0]

      [ 1022.026910] Add. Sense: No additional sense information
      [ 1022.026917] sr 0:0:0:0: [sr0] CDB:
      [ 1022.026921] Read(10): 28 00 00 00 00 00 00 00 01 00
      [ 1022.026980] FAT-fs (sr0): unable to read boot sector



      Does anyone know how to fix this?










      share|improve this question
















      I' m trying to burn a simple mp3 data CD but I can' t get k3b/brasero/xfburn to work. Basically K3b says 'Please insert an empty or appendable medium', like if there wasn' t a CD in the DVD recorder. Similar error messages are shown with other tools.
      However K3b can recognize the DVD drive, because it can show detailed information about it.



      $ LANG=C sudo lshw -C disk output



      *-cdrom                 
      description: DVD-RAM writer
      product: DVDRW DVR-K17B
      vendor: PIONEER
      physical id: 0.0.0
      bus info: scsi@0:0.0.0
      logical name: /dev/cdrom
      logical name: /dev/sr0
      version: 1.02
      capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
      configuration: ansiversion=5 status=ready
      *-medium
      physical id: 0
      logical name: /dev/cdrom


      I' ve added this configuration to my /etc/fstab file:



      # cdrom
      /dev/sr0 /media/cdrom0 iso9660 rw,user,noauto,unhide


      When I execute:



      mount -a


      I don' t get any error message.



      If I execute:
      mount /dev/sr0 /media/cdrom0



      I get:
      mount: /dev/sr0: can t read superblock



      On checking dmesg | tail, I can see:
      [ 1021.762622] EXT4-fs (sr0): unable to read superblock
      [ 1022.026866] sr 0:0:0:0: [sr0]

      [ 1022.026882] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
      [ 1022.026890] sr 0:0:0:0: [sr0]

      [ 1022.026895] Sense Key : Blank Check [current]
      [ 1022.026905] sr 0:0:0:0: [sr0]

      [ 1022.026910] Add. Sense: No additional sense information
      [ 1022.026917] sr 0:0:0:0: [sr0] CDB:
      [ 1022.026921] Read(10): 28 00 00 00 00 00 00 00 01 00
      [ 1022.026980] FAT-fs (sr0): unable to read boot sector



      Does anyone know how to fix this?







      mount dvd cd






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 18 '15 at 10:07







      Susanna

















      asked Sep 7 '15 at 10:29









      SusannaSusanna

      1625




      1625





      bumped to the homepage by Community 3 hours ago


      This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.







      bumped to the homepage by Community 3 hours ago


      This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
























          1 Answer
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          active

          oldest

          votes


















          0














          "If I execute: mount /dev/sr0 /media/cdrom0"



          one problem may be:



          overdefined! If fstab is working fine just say




          mount /dev/sr0




          That's it! Now mount must work.



          other problem can be:




          EXT4-fs (sr0): unable to read superblock




          you probably do NOT have ext4 on the CD! I'm not aware this exists.



          This means not to type the type in the CLI is striking back.



          Look at the man page to name the type. Most probably a




          -t iso9660




          will do the job.
          Type in the type and it will work on CLI.



          For modern SD-cards look out for exfat support. Something like



          install exfat-utils


          And for DVD-RAM you need UDFtools.





          DVD-RAM is very old so there is no new info. Old and underestimated. DVD-RAM on Ubuntu Linux is easy. I use Ubuntu 16.10 with XFCE4 but that does not matter at all.



          Why DVD-RAM? Because it is more reliable and more stable archiving data. See Wikipedia for details on DVD-RAM.



          However, DVD-RAM is rather an external drive than a DVD to write on. Not all drives can write and read. However, most modern Laptop and Computer optical drives can.



          Careful: DVD-RAM is slow by modern means. Don't force the mount and umount to break.



          We have to format it as UDF file system. This is the appropriate FS for the DVD-RAM (I do not quote the details here, use duckduckgo.com)



          Know your CD-Writer: Mount a CD, with „mount“ watch out for the name. Like /dev/sr0.



          Take the DVD-RAM out of the cartridge if necessary, put it in your drive and reboot.



          Prepare:



          sudo apt-get install udftools
          sudo apt-get install dvd+rw-tools



          Make a mount point:



          sudo mkdir /mnt/dvdram0



          and adapt the user rights etc. You need to adapt the rights again for the mounted DVD-RAM (different than vfat floppy or external drive).



          Adapt the fstab:



          sudo vim /etc/fstab



          For automatic mount enter a new line like



          /dev/sr0 /mnt/dvdram0 auto user,users,rw,auto,exec,utf8 0 0


          The first auto may better be "udf". The second auto depends on you: Try noauto if the boot process hangs.



          Format the DVD-RAM:



          sudo mkudffs --media-type=dvdram /dev/sr0



          The default options for mkudffs probably match your needs. Otherwise: man mkudffs !



          Mount the DVD-RAM:



          mount /dev/sr0



          should do it, otherwise use as sudo mount /dev/sr0. With the fstab entry it will be found.



          When you ask your CLI now with mount it should answer something like:



          /dev/sr0 on /mnt/dvdram0 type udf (rw,nosuid,nodev,relatime,utf8,user=myname)


          Now again adapt the access rights for the mounted(!) drive:



          sudo chown myname /mnt/dvdram0
          sudo chmod u+rwx /mnt/dvdram0



          Test your access rights:



          mkdir /mnt/dvdram0/mydirectory



          without sudo it should work. Otherwise check the rights.



          Do a reboot now or restart all relevant services.



          So now we have



          installed the tools
          prepared to mount
          formatted the DVD-RAM
          mounted it in the file system
          adapted the user access


          It shall be available in the file manager like a normal drive. Watch out for /mnt/dvdram0 (and in Nemo create a bookmark).



          Unmounting takes time because of write completion. It is done from CLI or try to find a way in your browser.



          What did I forget? What was wromng?



          Better way to unmount??






          share|improve this answer























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            1 Answer
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            active

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            0














            "If I execute: mount /dev/sr0 /media/cdrom0"



            one problem may be:



            overdefined! If fstab is working fine just say




            mount /dev/sr0




            That's it! Now mount must work.



            other problem can be:




            EXT4-fs (sr0): unable to read superblock




            you probably do NOT have ext4 on the CD! I'm not aware this exists.



            This means not to type the type in the CLI is striking back.



            Look at the man page to name the type. Most probably a




            -t iso9660




            will do the job.
            Type in the type and it will work on CLI.



            For modern SD-cards look out for exfat support. Something like



            install exfat-utils


            And for DVD-RAM you need UDFtools.





            DVD-RAM is very old so there is no new info. Old and underestimated. DVD-RAM on Ubuntu Linux is easy. I use Ubuntu 16.10 with XFCE4 but that does not matter at all.



            Why DVD-RAM? Because it is more reliable and more stable archiving data. See Wikipedia for details on DVD-RAM.



            However, DVD-RAM is rather an external drive than a DVD to write on. Not all drives can write and read. However, most modern Laptop and Computer optical drives can.



            Careful: DVD-RAM is slow by modern means. Don't force the mount and umount to break.



            We have to format it as UDF file system. This is the appropriate FS for the DVD-RAM (I do not quote the details here, use duckduckgo.com)



            Know your CD-Writer: Mount a CD, with „mount“ watch out for the name. Like /dev/sr0.



            Take the DVD-RAM out of the cartridge if necessary, put it in your drive and reboot.



            Prepare:



            sudo apt-get install udftools
            sudo apt-get install dvd+rw-tools



            Make a mount point:



            sudo mkdir /mnt/dvdram0



            and adapt the user rights etc. You need to adapt the rights again for the mounted DVD-RAM (different than vfat floppy or external drive).



            Adapt the fstab:



            sudo vim /etc/fstab



            For automatic mount enter a new line like



            /dev/sr0 /mnt/dvdram0 auto user,users,rw,auto,exec,utf8 0 0


            The first auto may better be "udf". The second auto depends on you: Try noauto if the boot process hangs.



            Format the DVD-RAM:



            sudo mkudffs --media-type=dvdram /dev/sr0



            The default options for mkudffs probably match your needs. Otherwise: man mkudffs !



            Mount the DVD-RAM:



            mount /dev/sr0



            should do it, otherwise use as sudo mount /dev/sr0. With the fstab entry it will be found.



            When you ask your CLI now with mount it should answer something like:



            /dev/sr0 on /mnt/dvdram0 type udf (rw,nosuid,nodev,relatime,utf8,user=myname)


            Now again adapt the access rights for the mounted(!) drive:



            sudo chown myname /mnt/dvdram0
            sudo chmod u+rwx /mnt/dvdram0



            Test your access rights:



            mkdir /mnt/dvdram0/mydirectory



            without sudo it should work. Otherwise check the rights.



            Do a reboot now or restart all relevant services.



            So now we have



            installed the tools
            prepared to mount
            formatted the DVD-RAM
            mounted it in the file system
            adapted the user access


            It shall be available in the file manager like a normal drive. Watch out for /mnt/dvdram0 (and in Nemo create a bookmark).



            Unmounting takes time because of write completion. It is done from CLI or try to find a way in your browser.



            What did I forget? What was wromng?



            Better way to unmount??






            share|improve this answer




























              0














              "If I execute: mount /dev/sr0 /media/cdrom0"



              one problem may be:



              overdefined! If fstab is working fine just say




              mount /dev/sr0




              That's it! Now mount must work.



              other problem can be:




              EXT4-fs (sr0): unable to read superblock




              you probably do NOT have ext4 on the CD! I'm not aware this exists.



              This means not to type the type in the CLI is striking back.



              Look at the man page to name the type. Most probably a




              -t iso9660




              will do the job.
              Type in the type and it will work on CLI.



              For modern SD-cards look out for exfat support. Something like



              install exfat-utils


              And for DVD-RAM you need UDFtools.





              DVD-RAM is very old so there is no new info. Old and underestimated. DVD-RAM on Ubuntu Linux is easy. I use Ubuntu 16.10 with XFCE4 but that does not matter at all.



              Why DVD-RAM? Because it is more reliable and more stable archiving data. See Wikipedia for details on DVD-RAM.



              However, DVD-RAM is rather an external drive than a DVD to write on. Not all drives can write and read. However, most modern Laptop and Computer optical drives can.



              Careful: DVD-RAM is slow by modern means. Don't force the mount and umount to break.



              We have to format it as UDF file system. This is the appropriate FS for the DVD-RAM (I do not quote the details here, use duckduckgo.com)



              Know your CD-Writer: Mount a CD, with „mount“ watch out for the name. Like /dev/sr0.



              Take the DVD-RAM out of the cartridge if necessary, put it in your drive and reboot.



              Prepare:



              sudo apt-get install udftools
              sudo apt-get install dvd+rw-tools



              Make a mount point:



              sudo mkdir /mnt/dvdram0



              and adapt the user rights etc. You need to adapt the rights again for the mounted DVD-RAM (different than vfat floppy or external drive).



              Adapt the fstab:



              sudo vim /etc/fstab



              For automatic mount enter a new line like



              /dev/sr0 /mnt/dvdram0 auto user,users,rw,auto,exec,utf8 0 0


              The first auto may better be "udf". The second auto depends on you: Try noauto if the boot process hangs.



              Format the DVD-RAM:



              sudo mkudffs --media-type=dvdram /dev/sr0



              The default options for mkudffs probably match your needs. Otherwise: man mkudffs !



              Mount the DVD-RAM:



              mount /dev/sr0



              should do it, otherwise use as sudo mount /dev/sr0. With the fstab entry it will be found.



              When you ask your CLI now with mount it should answer something like:



              /dev/sr0 on /mnt/dvdram0 type udf (rw,nosuid,nodev,relatime,utf8,user=myname)


              Now again adapt the access rights for the mounted(!) drive:



              sudo chown myname /mnt/dvdram0
              sudo chmod u+rwx /mnt/dvdram0



              Test your access rights:



              mkdir /mnt/dvdram0/mydirectory



              without sudo it should work. Otherwise check the rights.



              Do a reboot now or restart all relevant services.



              So now we have



              installed the tools
              prepared to mount
              formatted the DVD-RAM
              mounted it in the file system
              adapted the user access


              It shall be available in the file manager like a normal drive. Watch out for /mnt/dvdram0 (and in Nemo create a bookmark).



              Unmounting takes time because of write completion. It is done from CLI or try to find a way in your browser.



              What did I forget? What was wromng?



              Better way to unmount??






              share|improve this answer


























                0












                0








                0







                "If I execute: mount /dev/sr0 /media/cdrom0"



                one problem may be:



                overdefined! If fstab is working fine just say




                mount /dev/sr0




                That's it! Now mount must work.



                other problem can be:




                EXT4-fs (sr0): unable to read superblock




                you probably do NOT have ext4 on the CD! I'm not aware this exists.



                This means not to type the type in the CLI is striking back.



                Look at the man page to name the type. Most probably a




                -t iso9660




                will do the job.
                Type in the type and it will work on CLI.



                For modern SD-cards look out for exfat support. Something like



                install exfat-utils


                And for DVD-RAM you need UDFtools.





                DVD-RAM is very old so there is no new info. Old and underestimated. DVD-RAM on Ubuntu Linux is easy. I use Ubuntu 16.10 with XFCE4 but that does not matter at all.



                Why DVD-RAM? Because it is more reliable and more stable archiving data. See Wikipedia for details on DVD-RAM.



                However, DVD-RAM is rather an external drive than a DVD to write on. Not all drives can write and read. However, most modern Laptop and Computer optical drives can.



                Careful: DVD-RAM is slow by modern means. Don't force the mount and umount to break.



                We have to format it as UDF file system. This is the appropriate FS for the DVD-RAM (I do not quote the details here, use duckduckgo.com)



                Know your CD-Writer: Mount a CD, with „mount“ watch out for the name. Like /dev/sr0.



                Take the DVD-RAM out of the cartridge if necessary, put it in your drive and reboot.



                Prepare:



                sudo apt-get install udftools
                sudo apt-get install dvd+rw-tools



                Make a mount point:



                sudo mkdir /mnt/dvdram0



                and adapt the user rights etc. You need to adapt the rights again for the mounted DVD-RAM (different than vfat floppy or external drive).



                Adapt the fstab:



                sudo vim /etc/fstab



                For automatic mount enter a new line like



                /dev/sr0 /mnt/dvdram0 auto user,users,rw,auto,exec,utf8 0 0


                The first auto may better be "udf". The second auto depends on you: Try noauto if the boot process hangs.



                Format the DVD-RAM:



                sudo mkudffs --media-type=dvdram /dev/sr0



                The default options for mkudffs probably match your needs. Otherwise: man mkudffs !



                Mount the DVD-RAM:



                mount /dev/sr0



                should do it, otherwise use as sudo mount /dev/sr0. With the fstab entry it will be found.



                When you ask your CLI now with mount it should answer something like:



                /dev/sr0 on /mnt/dvdram0 type udf (rw,nosuid,nodev,relatime,utf8,user=myname)


                Now again adapt the access rights for the mounted(!) drive:



                sudo chown myname /mnt/dvdram0
                sudo chmod u+rwx /mnt/dvdram0



                Test your access rights:



                mkdir /mnt/dvdram0/mydirectory



                without sudo it should work. Otherwise check the rights.



                Do a reboot now or restart all relevant services.



                So now we have



                installed the tools
                prepared to mount
                formatted the DVD-RAM
                mounted it in the file system
                adapted the user access


                It shall be available in the file manager like a normal drive. Watch out for /mnt/dvdram0 (and in Nemo create a bookmark).



                Unmounting takes time because of write completion. It is done from CLI or try to find a way in your browser.



                What did I forget? What was wromng?



                Better way to unmount??






                share|improve this answer













                "If I execute: mount /dev/sr0 /media/cdrom0"



                one problem may be:



                overdefined! If fstab is working fine just say




                mount /dev/sr0




                That's it! Now mount must work.



                other problem can be:




                EXT4-fs (sr0): unable to read superblock




                you probably do NOT have ext4 on the CD! I'm not aware this exists.



                This means not to type the type in the CLI is striking back.



                Look at the man page to name the type. Most probably a




                -t iso9660




                will do the job.
                Type in the type and it will work on CLI.



                For modern SD-cards look out for exfat support. Something like



                install exfat-utils


                And for DVD-RAM you need UDFtools.





                DVD-RAM is very old so there is no new info. Old and underestimated. DVD-RAM on Ubuntu Linux is easy. I use Ubuntu 16.10 with XFCE4 but that does not matter at all.



                Why DVD-RAM? Because it is more reliable and more stable archiving data. See Wikipedia for details on DVD-RAM.



                However, DVD-RAM is rather an external drive than a DVD to write on. Not all drives can write and read. However, most modern Laptop and Computer optical drives can.



                Careful: DVD-RAM is slow by modern means. Don't force the mount and umount to break.



                We have to format it as UDF file system. This is the appropriate FS for the DVD-RAM (I do not quote the details here, use duckduckgo.com)



                Know your CD-Writer: Mount a CD, with „mount“ watch out for the name. Like /dev/sr0.



                Take the DVD-RAM out of the cartridge if necessary, put it in your drive and reboot.



                Prepare:



                sudo apt-get install udftools
                sudo apt-get install dvd+rw-tools



                Make a mount point:



                sudo mkdir /mnt/dvdram0



                and adapt the user rights etc. You need to adapt the rights again for the mounted DVD-RAM (different than vfat floppy or external drive).



                Adapt the fstab:



                sudo vim /etc/fstab



                For automatic mount enter a new line like



                /dev/sr0 /mnt/dvdram0 auto user,users,rw,auto,exec,utf8 0 0


                The first auto may better be "udf". The second auto depends on you: Try noauto if the boot process hangs.



                Format the DVD-RAM:



                sudo mkudffs --media-type=dvdram /dev/sr0



                The default options for mkudffs probably match your needs. Otherwise: man mkudffs !



                Mount the DVD-RAM:



                mount /dev/sr0



                should do it, otherwise use as sudo mount /dev/sr0. With the fstab entry it will be found.



                When you ask your CLI now with mount it should answer something like:



                /dev/sr0 on /mnt/dvdram0 type udf (rw,nosuid,nodev,relatime,utf8,user=myname)


                Now again adapt the access rights for the mounted(!) drive:



                sudo chown myname /mnt/dvdram0
                sudo chmod u+rwx /mnt/dvdram0



                Test your access rights:



                mkdir /mnt/dvdram0/mydirectory



                without sudo it should work. Otherwise check the rights.



                Do a reboot now or restart all relevant services.



                So now we have



                installed the tools
                prepared to mount
                formatted the DVD-RAM
                mounted it in the file system
                adapted the user access


                It shall be available in the file manager like a normal drive. Watch out for /mnt/dvdram0 (and in Nemo create a bookmark).



                Unmounting takes time because of write completion. It is done from CLI or try to find a way in your browser.



                What did I forget? What was wromng?



                Better way to unmount??







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                answered Sep 17 '17 at 10:44









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