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Unmount Volumes is a preference pane and associated startup item to allow an admin user to specify disk volumes that should not be mounted at boot time. This is useful if you have backup volumes that you want to make sure are at least a little more difficult to accidentally write to, or if you want to hide them from other users of your computer.

What's New

Version 1.0.9:

Update to improve reliability with external drive volumes


Mac OS X 10.5 or later

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Unmount Volumes User Discussion

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Macus Member IconReview+12

Multiple emails sent to the developer have gone unanswered. I assume that this program is dead (or the developer.) I would feel that the likelihood of a working update is not great.

Reply0 replies
Version 1.0.9
Macus Member IconComment+12

Unmount Volumes worked very well with previous OS X releases but seems to do nothing with Mavericks (version 1.0.10 which is supposedly the most recent.) Will try to contact the developer for more info and help.

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Version 1.0.9
EndoLab Member IconComment+95

10$ for this ?! Hope is a joke...

Reply4 replies
Version 1.0.9

Definitely not a joke.

As a system tester and designer I have to reboot often and having to unmount a large number of partitions each time is very time consuming.

This app saves me a lot of time, but more importantly... it saves me a lot of hair pulling.

I had been looking for something like this for years. This is the only app that I know that does this in the background so I don't have to think about it.

In the past I've found aliases that sometimes targeted incorrectly and save a file to a backup or a menu that has listed a folder on my backup drive. With this app unmounting my backups there is no chance I will accidentally save a file to a backup only to then over-write it on the next backup.

Losing critical data is definitely not a joke to me.

As with any app... if you don't need it... it's not worth the money... if you do... it is.


You can do this with TinkerTool System @ : http://www.macupdate.com/app/mac/13662/tinkertool-system


Agreed... though that feature's radio button for not mounting externals at startup does not appear to work properly, but yes... if you do add each volume individually to not mount at startup it does work.


I agree too. Everybody haves its own way to work and uses its preferred apps. I just find this one overpriced for what it does because I'm here to talking about software, and it's great to share what we know. Then no thumbs up no thumbs down, that's just good for Youtube's comments, and glad to share informations with you and everybody here.

Best regards,

Titus R.

Ronl Member IconReview+926

Great app!

Saves time not having to always manually unmount my numerous partitions and drives. You can designate just the ones you don't want to mount.

Comforting to know I haven't accidentally forgotten to unmount a drive and that an alias has retargeted and saved a file to a backup that will be overwritten. This has happened many times in the past when using some menu apps.

There's also a noticeable decrease in boot times since my numerous partitions/drives are not having to mount.

Also this app does not affect being able to use your startup keys (e.g. Option key to choose any of your connected drives) since Unmount Volumes loads later in the boot process).

Nice job... thanks for the app!

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Version 1.0.9
There are no Ratings for this App yet.
> 3 2


Current Version (1.x)


Downloads 1,780
Version Downloads 1,609
License Demo
Date 01 Aug 2009
Platform OS X / PPC 32 / Intel 32
Price $10.00
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