I mounted a ISO image with Furius ISO Mount. I cd to the mounted directory and tried to copy a file with

sudo cp file /dir

but cp writes error message

cp: cannot stat `file': Permission denied

The permissions of file are -r--r--r--

sudo chmod 777 file writes

chmod: cannot access `file': Permission denied

Do you know where the problem could be?

  • What are the permissions of 'file'?
    – klapaucius
    Commented Sep 1, 2011 at 13:32
  • see question edit
    – xralf
    Commented Sep 1, 2011 at 13:43
  • See this question.
    – Totor
    Commented Nov 5, 2016 at 23:42

2 Answers 2


Sounds to me like furiousisomount could be repsonsible for this issue. I know similar issues with broken file system modules and similar.

I usually mount ISOs via the loop device of the kernel. You can use it this way:

mount some.iso /mnt -o loop=/dev/loop0


Furius ISO Mount relies on FuseIso, which is a FUSE filesystem. FUSE allows users to provide their own filesystem drivers without using specific code in the kernel. FUSE filesystems are restricted to the user who runs the driver process by default. You need to pass the option -o allow_root or allow_other to the fusermount or fuseiso mounting command. This doesn't seem to be supported by Furius ISO Mount.

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