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There are a lot of applications that I have no use for that take up space on my Mac that I want to delete. When ever I try to delete them it says that it is an essential part of the OS, which is bollocks because since when is Chess an essential application?

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Is your question why Apple thinks Chess is an essential part of the OS or how to delete programs that Apple considers essential? –  Daniel Lawson Nov 8 '11 at 22:38
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6 Answers 6

Select the application you would like to remove and Get Info on it, either Command + i or from the Menu File>Get Info.

At the bottom of the resulting window, in the Sharing & Permissions section, change the "everyone" setting to "Read & Write". You will probably have to click the lock in the lower right corner first and authenticate as an administrator.

Once the setting is change, close the Get Info window. You should be able to move the application to the Trash without any trouble.

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Thank you for actually answering the question. –  tajmo Jan 13 '12 at 16:56
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Are you sure you're not being just a little excessive by trying to get rid of these apps?

While I accept that Chess might not be that essential to the Mac OS, I'd probably disagree about Address Book and maybe some of the other things that you've decided are unwanted.

I guess you probably have more than a 10MB hard drive, or a couple of floppies so hard drive space shouldn't be an issue. If you don't bother trying to delete the applications now, you've saved yourself the time in working out how to delete these 'unwanted' apps and also saved the time required to fix your installation later.

Plus, I wouldn't be surprised if during a later software update Mac OS tries to reinstall some of these applications... and you'll have to delete them all over again

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That warning is there for a reason for that warning, I wouldn't suggest deleting those apps since they don't take up much space anyway... if your really tight on space try an app like Monolingual which can delete unused languages and incompatible binaries (duplicates of programs made to run on older Macs). The 2 combined will save you several gb off your lion hard disk

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It's free btw! :) –  XAleXOwnZX Sep 2 '11 at 1:24
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I would recommend NOT deleting any apps native to the OS. Deleting these apps now may seem harmless, but you never know when that will bite you down the road. Software update and other update look for those during the update process, and trying to put such apps back can get complicated.

Go to the Apple site and try to find with app to download. The only place you will find them is in the OS installation package.

You are better off by far doing the Monolingual thing, and using an external drive for data storage, if your data is that large.

It's false economy to skimp on drive space. You will pay dearly in the end, somewhere down the road.

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While experimenting a bit further, I think that I may have solved the problem without using Terminal, which I have no experience with.

I selected the unwanted application, got information on it, unlocked the Sharing and Permissions, and changed every listed user name to be able to read and write. I then closed the "Get Info" window and selected the application again and control-clicked it and chose the "Move to Trash" command.

This successfully moved the chosen application to the Trash where I was able to delete it without getting the window saying that the application was necessary to the operating system. I was not able to do this by only changing the permissions for my user account. It was necessary to change all of the user account permissions.

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Easiest way I've found is to download and use "ppcleaner

  • once its running, go to preferences and uncheck 'Protect Launched Apps' and 'Prtect default apps' then click the top 'Applications' icon and it will scan for apps you can delete. it also deletes widgets, and other stuff too.
  • you can delete (if you dont uses these apps) chess, address book, itunes, dashboard, front row (on 10.6) ical, mail, photo booth without any problem straight away.

To be honest it doesn't make much difference to disc space or speed of the computer but it seems pointless to have them if you never use them. Obviously don't delete anyting you dont know what it is either, it is quite possible to delete stuff you dont think you need, most of this stuff does't actually run anyway unless you specfically call it.

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