Using first aid freezes my computer

The last 2-3 times i tried to use first aid my computer froze . First time i used it i have no problem, but it showed up from a moment and after (haven't identified what happened between).

I have used verify/repair disk permissions with the help of terminal though

Any ideas how to solve the problem?

MacBook Pro, OS X El Capitan (10.11.5)

Posted on Aug 18, 2016 1:36 PM

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8 replies

Aug 18, 2016 1:58 PM in response to ionasavg

That happens only when your drive stops responding, a sign of imminent drive death. Run, do not walk, to the store and get a new drive before the one you have stops working completely. It may already be too late.


I recommend an external enclosure or adapter as well, and installing Mac OS on the new drive BEFORE transplanting it. This gets your computer working faster, and helps separate issues of Installation from issues of transplant.

Sep 10, 2016 7:48 PM in response to ionasavg

It's difficult to say from our perspective. Disk Utility has this dialog when I run verify/ repair on my Mac…



Your computer may be slow or unresponsive while the startup disk is being verified.

The progress indicator and status messages may not be updated until the verification process is complete.



Is it possible you are simply seeing the 'slowness' that always happens when you test a disk that is running the OS?


The term 'froze' is a little vague. You could mean that it was unresponsive for a few minutes - which is quite normal when testing a spinning disk, or you could mean that it 'locked up' became unusable & required a force quit or reboot - which is not normal.


If you don't have a backup make one, otherwise investigate getting a new disk if your computer has been giving you issues. Eventually all disks will die or have issues, so a backup (or several) is the only way to ensure the data is safe.


If you want to investigate it further please post more info - e.g. why have you been running Disk Utility? Is it to try to solve any issues?

Sep 11, 2016 4:51 PM in response to Drew Reece

i have a laptop so it is only one disk.

every time i try it (maybe after a small delay) i can't do anything not even move my mouse. i've left it for some minutes (don't think that's more than 4-5 mins) to see if something will change but nothing happens so i force shut down and reopen it.

I usually do it because as far as i know it makes the pc have better performances since it is 5 years old

thanks a lot for the help though

Sep 11, 2016 5:15 PM in response to ionasavg

I don't think 4-5 minutes is long enough on a 5 year old Mac.


The dialog warns you about poor performance, so I would leave it at least 20-40 minutes before considering a force shutdown. I would also monitor the progress bar (place a postit near the bar to see if it progresses at all 🙂).


Forced shutdowns can actually cause the disk damage that Disk Utility is looking for, so it is important to let it finish if possible.


You can also boot into recovery mode to run disk verify & repair. It can be quicker as the OS is not in use on the area of disk that is being checked.

Disk Utility (El Capitan): Repair a disk



It is possible that the disk is failing/ failed, however you can still get a backup & test it if you want, recovery mode may be a better option to check the disk.

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Using first aid freezes my computer

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