Version 1.9.1 of Jettison has been released, and despite the minor x.x.1 version number change there are some new capabilities that will be significant to certain users.
First, Jettison can now eject disks after the display turns off. This is helpful for people that have system sleep disabled or can’t distinguish between display sleep and full system sleep. By ejecting the disk on display power-down, you can safely unplug external drives anytime the screen is dark.
The flip side of this, of course, is that things like Time Machine backups to an external drive will not run while you’re away because the drive ejects soon after your Mac goes idle. Also, this will NOT fix problems caused by plugging your external drives into a hub that’s integrated into your display. If the hub powers down when the display powers off, macOS will still give you “Disk not ejected properly” errors. Jettison ejects disks after the display powers off – it has no way of detecting display power-down before it happens.
The second big thing in this release is a change to accommodate macOS Sequoia 15.4’s increased security around ejecting disks when your login account doesn’t have administrator privileges. I’m not sure why Apple made this change, but errors saying “Higher privileges required by Jettison” began occurring in 15.4. So Jettison now uses a helper application (which does require an admin password to install) so it can still eject your disks despite this somewhat nonsensical restriction.
Version 1.9.1 also improves error reporting when disks can’t be ejected. It uses additional diagnostics to catch situations where an app is keeping a disk busy and includes more information in the resulting error messages. It also preemptively terminates the system’s AMPDevicesAgent process, which can prevent an external disk from ejecting if it houses your Apple Music library.
A full change history and download links are available on the What’s New page, or if you’re already running Jettison, just select “Check for Update” from its menu in your menu bar. As usual, this update is free if you’ve purchased a license for Jettison.
