I could boot into Recovery Mode ( Cmd+R+Pwr) and used this to access Disk Utility to run First Aid (no errors were found), and then used Terminal to run resetpassword which was then used to reset permissions on my user folder. This seemed to be meaningful, but was ultimately a wild goose chase. I was unable to boot into Single User Mode ( Cmd+S+Pwr), but it and Verbose Mode ( Cmd+V+Pwr) did show that the boot process was hanging and the last message it displayed was: pci pause: SDXC I reset the SMC ( Shft+Ctrl+Opt+Pwr while off, then Pwr), I reset the PRAM ( Cmd+Opt+P+R+Pwr while booting, then hold until the chime sounds again), I tried to boot into Safe Mode ( Shft+Pwr). #IDEFRAG VS ONYX PRO#Thus when I was notified that it was available, I dutifully upgraded… and then my MacBook Pro Retina wouldn’t reboot. #IDEFRAG VS ONYX UPDATE#After Update, OS X Won’t RebootĪfter upgrading to OS X El Capitan (10.11) when it was released, I had been generally pleased with the new version but there were a few quirks – like random beach ball pauses – that made me think the 10.11.1 update would address some of them. It seems to have left behind a kext named .kext and once I deleted it, things work again. Before I knew this I installed Malwarebytes to check for spyware/adware causing the CPU usage, then uninstalled it after installing the OS X beta. I am using the Beta version because 10.13.2 had very high CPU usage by the WindowServer process that was fixed in 10.13.3. Update – I updated to 10.13.3 High Sierra Beta 5 and once again was unable to boot. Removed everything older than 2016 after running ls -lat. This time I had to remove kexts from /System/Library/Extensions. Update – I updated to 10.12.6 and once again was unable to boot. Update – This has been an issue for myself and others running OS X Sierra as well. Update – It happened again when I updated to 10.11.4! Even fewer clues this time, additional details and an updated script to remove non-default kext files at the very bottom. Otherwise feel free to read the saga below! #IDEFRAG VS ONYX UPGRADE#Upgrade RAM: This solution won't help you to prevent fragmentation but it will improve the system performance.If your OS X El Capitan/Sierra/High Sierra update won’t reboot you can skip to the fix or check here for the (mostly) automated fix script.So, you'll have to empty the trash more frequently. Even though the files are deleted from Mac, space is occupied by the trash. Clear Regularly: Apart from the system, you have to clean the Trash too.Offload old data that is stored on online servers or external drives to make up space for new files.So, you need to filter the list to free up resources to make sure that no extra space is occupied by them. There are lots of apps that run in the background. Prevent Programs from Launching Automatically when you turn on Mac.The system update will also fix bugs and other reasons that are declining Mac performance. #IDEFRAG VS ONYX SOFTWARE#Update Software regularly as most of the issues happen due to the use of outdated software.But here are some additional tips that will speed up Mac: It is likely that your system will work fine now. #IDEFRAG VS ONYX FOR MAC OS#In case it is, the OS automatically defrag Mac files.Īs you clean up the Mac, the need for Mac OS defrag will decrease and the system will start running smoothly.
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