[lubuntu] Mount ISO Read/Write not working

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http://ubuntuforums.org – All, I'm running Ubuntu 12.04 and I'm trying to mount an ISO file as Read and Write but get the following warning: mount: warning: /mnt/iso1 seems to be mounted read-only. I issue the following command: sudo mount -rw -o loop Core-current.iso /mnt/iso1 Any ideas why I can't mount the ISO file as read/write??? Thanks! (Hardware)