New to Mac, How do I completely delete a file on my computer?

Hieveryone

macrumors 601
Original poster
Apr 11, 2014
4,228
1,487
USA
I downloaded BlackMagic Disk Speed Test and just deleted it.

What I did was go to finder ---> Applications ---> Right click on BlackMagic Disk Speed Test ---> Clicked Open Package Contents ---> Then I dragged everything into the trash. Then I dragged the app to the trash.

How can I be certain all the files from the app are off my computer?

Thanks.
 

snaky69

macrumors 603
Mar 14, 2008
5,903
481
I downloaded BlackMagic Disk Speed Test and just deleted it.

What I did was go to finder ---> Applications ---> Right click on BlackMagic Disk Speed Test ---> Clicked Open Package Contents ---> Then I dragged everything into the trash. Then I dragged the app to the trash.

How can I be certain all the files from the app are off my computer?

Thanks.
You could've simply dragged the app to the trash without bothering to open the package content, the result would've been the exact same.

With that said, you've already done everything there is to do.
 

DeltaMac

macrumors G3
Jul 30, 2003
9,605
2,352
Delaware
You missed the final step, which is:

Empty the trash.

Files and folders in the trash continue to take storage space.
Drive space is not released until you empty the trash.

You really don't need to open a package, as all the files in that package will go in the trash when you drag the app there. It's not the same as sometimes in Windows where you have to empty a folder before you can delete the folder. You don't need to make a simple app delete too difficult. On a Mac, generally it's nothing more than dragging an app to the trash, and empty the trash, and - that's all that's needed (there's normally no need for a special uninstall)
 

yjchua95

macrumors 604
Apr 23, 2011
6,725
230
GVA, KUL, MEL (current), ZQN
I downloaded BlackMagic Disk Speed Test and just deleted it.

What I did was go to finder ---> Applications ---> Right click on BlackMagic Disk Speed Test ---> Clicked Open Package Contents ---> Then I dragged everything into the trash. Then I dragged the app to the trash.

How can I be certain all the files from the app are off my computer?

Thanks.
For apps downloaded from the Mac App Store (MAS), you can just completely remove them by opening up Launchpad, locating the app, holding down Option and clicking on the X sign that appears when the Option key is held down.
 

Freyqq

macrumors 601
Dec 13, 2004
4,015
169
I downloaded BlackMagic Disk Speed Test and just deleted it.

What I did was go to finder ---> Applications ---> Right click on BlackMagic Disk Speed Test ---> Clicked Open Package Contents ---> Then I dragged everything into the trash. Then I dragged the app to the trash.

How can I be certain all the files from the app are off my computer?

Thanks.
Installation across OS, with few exceptions:

In Windows:
Files for a program are in /Program Files/. Other files are spread throughout the file system in various places, like in the Users/x/Appdata folder.

In OSX:
Files for the program are in /Applications/. The launch icon includes an integrated subdirectory that houses all the program files. All preferences for the application are in /Users/x/Library/Application Support/. Preferences usually aren't deleted by users, as they generally take up less than a MB per application and aren't worth the trouble of deleting.
 

Hieveryone

macrumors 601
Original poster
Apr 11, 2014
4,228
1,487
USA
Installation across OS, with few exceptions:

In Windows:
Files for a program are in /Program Files/. Other files are spread throughout the file system in various places, like in the Users/x/Appdata folder.

In OSX:
Files for the program are in /Applications/. The launch icon includes an integrated subdirectory that houses all the program files. All preferences for the application are in /Users/x/Library/Application Support/. Preferences usually aren't deleted by users, as they generally take up less than a MB per application and aren't worth the trouble of deleting.


Hey guys, so I went on YouTube and did what this guy said.

http://www.youtube.com/watch?v=E6jgAIYr8to

Can anyone please verify if this method is OK?

Thanks
 

laurihoefs

macrumors 6502a
Mar 1, 2013
792
22
Hey guys, so I went on YouTube and did what this guy said.

http://www.youtube.com/watch?v=E6jgAIYr8to

Can anyone please verify if this method is OK?

Thanks
I would strongly advise against the method used in the video. It involves a very high risk of accidentally removing important files. If you look closely to the files being removed in the video, you'll see, they include emails (including one whole Thunderbird mailbox, named All mail.msf), images and other documents that have nothing to do with the app he's trying to remove.

Just dragging the application and its settings folder (from Users/'Username'/Library/Application Support/) to trash, and then emptying the trash is enough in most cases.
 
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yjchua95

macrumors 604
Apr 23, 2011
6,725
230
GVA, KUL, MEL (current), ZQN
Hey guys, so I went on YouTube and did what this guy said.

http://www.youtube.com/watch?v=E6jgAIYr8to

Can anyone please verify if this method is OK?

Thanks
Why not just save the trouble, go to Launchpad, hold down Option and click the X sign that appears on the app to remove it? That's guaranteed to remove everything.

If you're still nervous, go get AppZapper and it'll automatically remove all the pertinent files.
 

Marty62

macrumors 6502
Mar 11, 2010
394
0
Berlin formerly London
^^^^ This or use the finder to find everything with the app name or the
company name, such as "DriveX" or whatever.

Finder will list all the prefs / system files relating to that name.

Then drag them all to the trash and empty OR secure empty, if you're
sure you don't ever want to see them again.

Careful, that youtube video is a bit silly, major mistakes can be made
and simply dragging app to the trash or using something like app zapper will do
99% of the time.

M.
 

Mesonoxian

macrumors newbie
Mar 16, 2014
10
0
When you delete a file in OS X, the operating system is not actually erasing the data, but rather it just marks the space that said file took up on the physical hard drive as free space to be written over with new data, and 'unlinks' the file from directory/folder/filesystem entries. This does not actually write over the deleted data, hence it still can be recovered using third-party programs.

So, if you need to completely delete sensitive files (financial information, government secrets etc), use the option called "secure empty trash". The OS then overwrites the deleted file with random data before it 'unlinks' the file from directory/folder/filesystem entries.

Hope this helps!
 

Hieveryone

macrumors 601
Original poster
Apr 11, 2014
4,228
1,487
USA
I would strongly advise against the method used in the video. It involves a very high risk of accidentally removing important files. If you look closely to the files being removed in the video, you'll see, they include emails (including one whole Thunderbird mailbox, named All mail.msf), images and other documents that have nothing to do with the app he's trying to remove.

Just dragging the application and its settings folder (from Users/'Username'/Library/Application Support/) to trash, and then emptying the trash is enough in most cases.



Thanks, I'll be careful!

Does anyone know if Disk Doctor from the app store would help? It says it deletes app cache and app data.

Not sure if that's the same thing.
 

snaky69

macrumors 603
Mar 14, 2008
5,903
481
Thanks, I'll be careful!

Does anyone know if Disk Doctor from the app store would help? It says it deletes app cache and app data.

Not sure if that's the same thing.
If I may ask, what makes you so insistant on trying to delete files on your computer? It won't make it run any faster.

I'd leave Disk Doctor alone.
 
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Tulani

macrumors 6502a
Dec 6, 2012
877
93
app Deleting

i use AppDelete Lite form the Mac App store.

not sure if it does anything better than dragging to trash but I noticed it also removes any remaining app residual files
 

Hieveryone

macrumors 601
Original poster
Apr 11, 2014
4,228
1,487
USA
If I may ask, what makes you so insistant on trying to delete files on your computer? It won't make it run any faster.

I'd leave Disk Doctor alone.
Windows 7! I guess I'm just paranoid if files just sit there it might slow down my computer over time.

I know for a fact if you got a PC, you dare not leave any junk files on there because it WILL slow down over time :mad:

I guess I just need to get use to dragging and dropping and trust that any files that are left will do no harm :apple:
 

snaky69

macrumors 603
Mar 14, 2008
5,903
481
Windows 7! I guess I'm just paranoid if files just sit there it might slow down my computer over time.

I know for a fact if you got a PC, you dare not leave any junk files on there because it WILL slow down over time :mad:

I guess I just need to get use to dragging and dropping and trust that any files that are left will do no harm :apple:
Slowdowns occur when too much storage is used on a magnetic platter hard drive, when there is less than 20% free space left. Assuming you have a retina MacBook Pro: Since you have neither a magnetic platter hard drive nor less than 20% free space, deleting stuff will gain you absolutely nothing in regards to performance, whether you are on windows or on OS X.

Slowdowns on windows usually occur due to corruption in the registry from installing and uninstalling so much crap or for the reason stated above. There is no registry in OS X, so that can't happen.
 

leman

macrumors G4
Oct 14, 2008
10,166
4,694
Slowdowns occur when too much storage is used on a magnetic platter hard drive, when there is less than 20% free space left. Assuming you have a retina MacBook Pro: Since you have neither a magnetic platter hard drive nor less than 20% free space, deleting stuff will gain you absolutely nothing in regards to performance, whether you are on windows or on OS X.
Slowdowns on high space utilisation are very prominent with SSDs. Google it.

Slowdowns on windows usually occur due to corruption in the registry from installing and uninstalling so much crap or for the reason stated above. There is no registry in OS X, so that can't happen.
OS X uses a series of setting databases which play the same role as the registry in Windows. These databases can get corrupted as well.
 

Trek2100

macrumors 6502a
Oct 20, 2009
544
1
Sevierville, TN
Since the OP is not comfortable with the good advice that has been given, i.e, drag to the trash and delete the trash, etc., I would suggest the OP purchase the book "Switching to the MAC the missing manual" by David Pogue for the version of OSX that is on the computer. It explains everything you need to know.

My piece of advice, OSX IS NOT WINDOWS!!!!! Get out of the Windows mindset. I was trained on most all of the MS operating system from PC-DOS (first version for the IBM PC), MS-DOS all the way through Win 7. Trust me, there is a learning curve when switching to OSX but it is not difficult. The book I mentioned has a wealth of information and makes switching a piece of cake.