Main Menu

Steam can't write to install dir

Steam gives the error "Steam can't write to its install dir. Make sure you're not trying to run from the disk image." How can I fix this?

This may mean that you are trying to run Steam from the disk image (dmg file) that you downloaded.

Do the following to correct this:

  • Open the dmg file and drag the Steam icon into the Applications folder.
  • Run Steam from the Applications folder


You may also see this error if Steam requires an administrator username and password, but you do not provide them

Problem with Steam?

Contact Steam Support