is there a way to eject all external hard drives from the command line? (OS X)

applescript, command-line, macos

Solution

In Terminal try:

- `umount -a` (All the filesystems described via getfsent(3) are unmounted.)

- `umount -A` (All the currently mounted filesystems except the root unmounted.)

Fore more information see `man umount`.

Update:

Seems like you can also use this:

diskutil unmountDisk /dev/disk*

Didn't test it, though. If it doesn't work, try to use "unmount" instead of "unmountDisk".

Oh, I also found the `eject` argument (instead of `unmountDisk`). That might also be of interest.

Update 2:

`diskutil eject /dev/*` seems what you are looking for (see comments).

Problem

Original source