Slow Boot Since Installing OS X 10.10.3

I tried doing that but still, booting takes longer than a minute. Any other option?

Hasn't worked for my iMac Mid 2011. Not sure about resetting PRAM as unsure what this means....can anyone help?

From a quick look on related PRAM forums shows resetting can cause other issues too?

Any advice would be very welcome. 😕

Hi Since installing OS X Yosemite 10.10.3 from the chime to the apple logo takes 1 min 25 secs and yes the start up disc is the internal one. Any other possible things to check ?/

Had same problem. Ended up reinstalling OS X 10.10.3 which still failed to solve problem. Fixed issue by shutting down the computer and disconnecting the power cord. I actually left disconnected overnight but 15-20 seconds probably adequate. Reconnected to power, waited 5 seconds before pressing power button to turn on computer. Problem solved. The procedure supposedly resets the System Management Controller (SMC), can't figure out whether the SMC was the actual problem or why if so it causing the problem , but it worked.

It didn't help me! I have a two year old iMac with only 30gb of the 500gb hd in use . The biggest file is iPhotos.

Since loading Yosemite time to web browser takes 42 seconds. I don't understand it! The computer is so much slower, and it only has the one hard drive, so the tip they gave you doesn't work with my desktop.

I bank on line so the bank advised me to download Rapport security. That results in the spinning wheel of death appearing more often and for longer, but IBM says it should make little difference.

Thank You!!!!!! Major life saver.

Changing the startup disk worked for me as well! But the first few times I tried it I restarted my MacBook Pro (2011) from the start up menu and not where it says restart under the Startup Disk area. Silly mistake on my part, but I thought I'd share my experience for anyone else who might have done the same thing.

My MacBook Pro Mid-2012 non-retina 16GB running Yosemite takes 10 to 15 minutes to boot, every time I boot it. It stays on the gray logo screen with a slow, crawling progress bar. Its been doing this for over a year. I've tried all the tips from this and other forums for the past year. Nothing has helped (resetting the startup disk, resetting PRAM and SMC, etc). I've learned to cope by just never shutting it down. Since I don't like watching my lawn grow either, if I have to restart, I go do something else for 15 mins. Or I go to bed (I know I can count on waking up to a login prompt in the morning, so that's good, I guess). I've given up and don't expect any resolution. Just wanted to vent. Reminds me of my old Windows days...

That is awful! Mountain Lion was the OS when I bought my iMac, and I remember being impressed with how quickly and smoothly it started up. I was such a 'Macnovice' I didn't think twice before downloading Mavericks and then Yosemite, and I didn't understand Time machine backup, so I didn't retain the Mountain Lion OS.That was 2012. Now I have an external hard drive, the computer is still slow! Yosemite is imo inferior to Mountain Lion, but I am not keen on changing it for the latest El Capitain in case it is even more complicated.

I remain a fan of Apple build quality and graphics, and Apple support. I don't understand though why Apple would change things like (eg) 'bookmarks' and 'favourites' which worked well as it was; (click to open + to add etc.). Now it is so unobvious to use that I have stopped using it altogether. This means that it joins 'Launch', 'Mission Control','Mail' and 'Activity Monitor' as irrelevant or unnecessary apps on my computer. I have never seen a real use for them.

Word is useful but extremely limited, and I think expanding and improving it whilst losing say Mission Control, would be a real bonus. Safari is indispensable of course and is at the heart of my computer usage.

I sometimes wonder why programme designers don't sit down with 'non techie' end users and find out what they actually look for in a computer, because it seems to me that the technically minded love all the little 'quirks' and tricks, whereas most owners just want to get on and use it without having to keep learning new methods.