Installing Mountit Pro

Mountit Pro is distributed as a disk image, signed with our Apple Developer ID and notarized by Apple. Gatekeeper accepts it without a warning and without the right-click-Open trick.

1. Install the app

Open the DMG and drag Mountit into Applications. This step is not optional cosmetics: an app running from a mounted disk image cannot register a file system extension, so leaving it on the DMG will make the next step fail with no useful error.

2. Add a connection and mount it

There is nothing to switch on first. Mounts are served by Mountit's File Provider extension, which macOS activates on its own, so adding a connection and choosing Mount is the whole of it.

3. Check it took

The connection appears in the Finder sidebar under Locations. From Terminal it lives under ~/Library/CloudStorage:

ls ~/Library/CloudStorage

It will not appear in mount output or in /Volumes. A File Provider mount is a Finder location, not a mounted filesystem, and that is the surface both editions use today.

What the “File System Extensions” switch is for

The Mountit Pro build also carries an FSKit module, which is the path to a real volume in /Volumes on macOS 26. It is not working yet, and there are two separate reasons, so we would rather you did not spend an evening on it:

• macOS requires you to switch a third-party filesystem on yourself, under System Settings › General › Login Items & Extensions › File System Extensions. No app may do it on your behalf.
• Past that, the network-URL load path FSKit uses still fails on macOS 26.6 — for Apple's own modules as well as ours. Until Apple's ftp module mounts on a machine, ours will not either.

When it works, this page says so and the changelog records it.

Requirements

• macOS 14 or later
• Apple silicon
• No kernel extension, no macFUSE, no reduced security mode