Thread: OnyX and slow iMac
08-15-2013, 05:24 AM #1
OnyX and slow iMac
- Member Since
- Mar 18, 2009
- Melbourne, Australia
- OS-X Yosemite iMac, 4GB memory, 2.4 GHz Intel Processor
I am running OSX 10.8.4 on my iMac. It has recently started running very slowly. Elsewhere I saw a recommendation to install OnyX. I downloaded it, but when I tried to install it, I received a message to the effect that this was not downloaded from the App Store and so my settings did not permit me to install it.
Any suggestions as to whether it is worth installing OnyX - I realise that some say yes and some say no - and, if yes, how to get around the settings not allowing the installation.
Also, any other suggestions please as to how to rejuvenate my iMac without formatting the hard disc and reinstalling the software from scratch?
08-15-2013, 08:43 AM #2
- Member Since
- Jan 23, 2009
- Born in Scotland, Worked in Scotland then England, Now live in Wales
- Late 2015 5K 27-inch Retina iMac, 4GHz i7, 32GB RAM, 1TB Flash Drive, macOS Sierra 10.12.3
This is quite in order. Apple adds an additional layer of security which simply advises you that you are downloading an app outside of the Apple App Store.
OnyX is a great app and secure.
So, go into System Preferences>Security & Privacy>General. Then check the box: "allow apps from anywhere"
Now OnyX will run fine. Afterwards, it will continue to run, but if you are very security-concerned, you can always return to the Security & Privacy settings and re-check the "only allow from app store" if that's what you want.
08-15-2013, 02:53 PM #3
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