I want to mount two disks or directories into a single mount point. I saw some article online which mentioned bindfs, I had a look at it but I don't understand how it can help.

Another article shows how to mount two disks into a single directory using this mount option: -o union. I tried those instructions and they don't seem to work.

My goal is to mount a disk into an existing directory of an already mounted disk and see both files from the mounted disk and the directory.


The solution proposed is not working, the content of the disk hides the content of the target directory.

  • 1
    Possible duplicate of Mount folder as a volume (OSX)
    – Allan
    Sep 13, 2018 at 17:08
  • I don't see how this is the same issue, I want to keep the existing file from the mount point alongside the files from the mounted disk. Sep 13, 2018 at 17:20
  • 1
    Look at the second solution using bindfs
    – Allan
    Sep 13, 2018 at 17:28
  • bindfs /Volumes/Disk ~/TargetDirectory It does not work, the files inside the second directory are being hidden by the content of the disk. I am asking for a solution which merges the two contents. Sep 13, 2018 at 19:55


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