I just installed MacOS Sierra on my macBookPro , I realised startup is slower than in Mavericks, can anyone direct me how can I or what Can I do to speed up boot and after booth startup. My MacBook RAM is 4GB, I hope this is not a problem otherwise.
I don't know if this is reliable, but I saw on macxdvd.com (I am not recommending their software) that if boot time is slow on Sierra, to try the following:
Many users reported that updated macOS Sierra boot-up time increased a lot. How to speed up macOS Sierra? It's quite easy. Head to System Preferences > Startup Disk > primary disk and click "Restart" the Mac computer. If it doesn't fix slow Mac macOS Sierra after upgrading to macOS Sierra, reset PRAM.
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. Turn on your Mac.
Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
Hold these keys until the computer restarts and you hear the startup sound for a second time.
Release the keys.
After resetting NVRAM, you may need to reconfigure settings for speaker volume, screen resolution, startup disk selection, and time zone information.
Please comment if this had any effect.
I had the same problem with MacbookPro 2015 and tried the soft reset as mentioned - but it did not help. I solved the issue by starting my computer using the safe mode as described by Apple support. In short: turn off your computer and restart it. Immediately after hearing the startup sound press and hold the shift key. Release when Apple logo appears. Thus the system will try to fix directory issues and your screen will blink and look funny for few seconds...Then you can restart the computer as usual and hopefully be happy again.