This script is meant to auto-eject a drive after the amount of time set in the script. It will prompt you first, so you may cancel at that time.

Why would this be useful? I have a Garmin Edge 130 bicycle computer. I had been using my phone, but every app/service has binding arbitration garbage in their 50 page click contract (aka baloney), even so far as with Strava flat out stating they may delete your account if you opt-out of it. Via real mail, of course. Outrageous. So I went with Garmin, who actually have a much smaller click contract. Like a breath of fresh air.

At any rate, my wife also has a Garmin Forerunner 35 watch and, like my Edge 130, includes a drive which mounts on your desktop when plugged into a computer. I believe this drive is used for manually installing watch faces or “widgets” and data screens. Although Garmin makes software to load those sort of things.

We typically plug these devices into a computer to charge them and when they are unplugged the Finder complains about the drive having not been ejected properly and file damage or something. Who even reads those things? That’s where this script comes in and why the trigger is “GARMIN”.

This script is meant to be attached as a Folder Action on the Volumes folder.

-- http://strawhousepig.net/

-- Name of disks to watch out for.
property triggers : {"GARMIN"}

-- Number of seconds until the script executes its mission unless user cancels.
property TKO : 30

on adding folder items to this_folder after receiving added_items
  do_it()
end adding folder items to

on run
  do_it()
end run

on do_it()
  tell application "Finder"
    try
      set these_hds to every disk whose name is in triggers
      if these_hds is not {} then
        set now to current date
        display dialog "The following volumes will be ejected in " & (TKO as text) & " seconds." & return & return & these_hds as text with icon 2 giving up after TKO
        set the_res to the result
        if gave up of the_res is true then
          my inspected_detected_and_ejected(these_hds)
        else
          set now_now to current date
          delay TKO - (now_now - now)
          my inspected_detected_and_ejected(these_hds)
        end if
      end if
    on error theErr number theNum
      if theNum is not -128 then display dialog theErr giving up  after TKO -- Error -128 is the cancelled by user error.
    end try
  end tell
end do_it

on inspected_detected_and_ejected(these_hds)
  repeat with this_hd in these_hds
    try
      tell application "Finder" to eject this_hd
    end try
  end repeat
end inspected_detected_and_ejected

Notable is that this script delays the full set time whether the user clicks “OK” or not.