Hi there,
I have a Retina MacBook Pro 2015 running Yosemite 10.10.3. Ever since updating I have noticed a slow boot up time. I press the power button, hear the Mac sound, then it's a black screen for 20-30 seconds, after that I see the Apple logo for 5 seconds then it's in my login screen... So why is it a slow boot up time? Or is it suppose to be that long? It was not when I was on the Yosemite version before 10.10.3.
Select Macintosh HD as the Startup Disk.
“Set the default startup disk” http://support.apple.com/kb/HT1310
Hey Guys,
I found the solution browsing the web. Here is the link on how to fix your MacBook Pro start up time, http://www.redmondpie.com/fix-slow-boot-up-after-os-x-10.10.3-yosemite-update-he res-how/ . As mentioned in option one, "head to the System Preferences, and selecting Startup Disk. Then, select your primary disk, and hit ‘Restart’ from the same window." Fixed my issue.
Retina MacBook Pro boot time slow
