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Topic # 165650 16-Feb-2015 12:43
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Since Yosemite came along, I have noticed that on occasion my iMac can take an absolute age to boot, sitting with a blank light grey screen for sometimes 2 or 3 minutes with no indication on screen whether it is doing anything at all....!

Is that usual?

The machine is quad core i7, 32 Gb RAM and has the Fusion Disk so is normally fairly fast.





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  Reply # 1239972 16-Feb-2015 12:58
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It might be checking an external hard drive? You've mentioned these in previous
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  Reply # 1239976 16-Feb-2015 12:59
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Check your start up drive in Preferences - set it to another one and back again

 
 
 
 




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  Reply # 1239984 16-Feb-2015 13:09
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khull: Check your start up drive in Preferences - set it to another one and back again


It only shows Macintosh HD as an option.





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  Reply # 1239989 16-Feb-2015 13:13
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I would just fresh install it from the internet.




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  Reply # 1239990 16-Feb-2015 13:13
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Did you upgrade to Yosemite or do a fresh install?

No issues on mine, boots in 10 seconds or less most of the time.   And mine is ooooold - 2011 MBA. 

Could be disk health, or something else hardware related.

SMC Reset should be your first stop.

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  Reply # 1240049 16-Feb-2015 14:20
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Do i fresh install. Every upgrade i have done have resulted in slow disk performance which only got resolved after a fresh install

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  Reply # 1240066 16-Feb-2015 14:45
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Geektastic: It only shows Macintosh HD as an option.

Is it selected (ie. is the text highlighted)?



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  Reply # 1240634 17-Feb-2015 10:29
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Yes it is selected.

I think the instal was an App Store upgrade. It shipped with Mavericks I think.





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  Reply # 1240675 17-Feb-2015 10:56
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Set it again in Preferences --> startup disk - select the boot drive and click "Restart..." . May not work in your case but worth a try



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  Reply # 1240770 17-Feb-2015 12:30
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I'm trying to create a bootable drive but the process strays into areas that are a bit tech for me, like using the Terminal commands etc.

I am surprised Apple did not make it a more simple exercise than this.





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  Reply # 1240790 17-Feb-2015 12:44
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Please do an SMC Reset before you do anything else.  It fixes tons of hardware/firmware related issues.  At least if it's done and you're still having problems you can rule it out but it's so quick and easy and fixes so much it's mad not to try it.

http://support.apple.com/en-nz/HT201295



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  Reply # 1242203 19-Feb-2015 11:35
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So I did the SMC, which seemed to make little difference (although pulling the plug out for 15 seconds is at least simple and easy!!).

I then re-installed Yosemite having found step by step instructions for making a bootable thingy from my handy USB stick. Worked fine and I have to say it is much faster now than it was. Still in my recollection slower than Mavericks was though.





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  Reply # 1242214 19-Feb-2015 11:39
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I get the Grey screen and small progress bar that is there for about 30 seconds then it moves on, it takes about a minute to boot. My big issue is with the spinning ball which I am getting in increasing frequency.




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  Reply # 1242219 19-Feb-2015 11:45
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KiwiNZ: I get the Grey screen and small progress bar that is there for about 30 seconds then it moves on, it takes about a minute to boot. My big issue is with the spinning ball which I am getting in increasing frequency.


No spinning ball yet but otherwise the same. Not sure where that silly progress bar suddenly came from. Cant see a point for that - it has never been there before.





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