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Want to improve performance? Clean install ML

After ML was released I did an upgrade on top of Lion. Well, all was great except of Safari that started crashing. Couple of days ago, I got frustrated with Safari crashing on ML so I decided to do Clean Install w/ USB stick (to see if it would solve the problem). After Clean Install was done and all my files were imported from Time Machine backup onto my MBP what happened with Safari? It did not crash anymore! I don't know what the magic difference was but obviously Clean Installation was a better choice for my mac :)

So, naturally I give my vote for Clean Installation :D
 
Slightly off topic, but in all the years i've owned a Mac, i've never had one crash A La Windows, however 5 minutes ago, in the middle of typing an email, my MacBook Pro just restarted out of the blue. 10.8.1 please.
 
rangen said:
Slightly off topic, but in all the years i've owned a Mac, i've never had one crash A La Windows, however 5 minutes ago, in the middle of typing an email, my MacBook Pro just restarted out of the blue. 10.8.1 please.
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If I were you I would try to do a PRAM/NRAM (or something*RAM) reset and see if it fixes the problem.
 
rangen said:
Slightly off topic, but in all the years i've owned a Mac, i've never had one crash A La Windows, however 5 minutes ago, in the middle of typing an email, my MacBook Pro just restarted out of the blue. 10.8.1 please.
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No worries, 10.8.1 is baking already.
 
September I should think for .1, not a bid deal anyway, unless it happens again
 
kemo said:
Looks like you missed one more crap to remove then, because these issues are hardly made by OSX, some apps has to be involved in this. Try to check Console.
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The only apps that were installed after the 10.8 install were Pages, Keynote, and Numbers. Plus, I only moved over a small amount of data. After three trips to the genius bar (and no resolutions), the "genius" said each kernel panic was being caused by a different process, so he couldn't narrow down the problem. New problems pop up every day, and the only reasonable solution I've been presented with is to erase and install.

...again.
 
Zach23 said:
Can anybody say that a clean install fixes UI lag or safari scroll lag, or that stuff? If so, I will definitely do a clean install!
thanks
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100% yes in my case.

colloc said:
My 2 week old 2012 MBP had many problems after upgrading to ML: noticeably slower boot time, unresponsive clicks, random lags, slower parallels performance, ect

At first I didn't want to do a clean install because I read somewhere on MacRumors that for a Mac system a clean install vs upgrade have little differences, because Mac OS's better optimized than Windows. I decided to do a clean install anyway because I couldn't stand my Mac's performance anymore.

Now all those problems are gone, and my new ML flies. I would definitely recommend a clean install if you have problems after upgrading your Mac OS.

Seems like there is a difference between upgrading and clean install after all even for Mac OS X. Considering the fact that I've used my Mac for only 2 weeks, I shouldn't have littered the OS enough for that many problems.
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This was the same results that I got, much faster and smoother after a clean install. It is not something I would do normally, but this is a new Macbook and the performance was laggy for everything such as swiping, scrolling and even mission control. I was also finding some apps like iPhoto were incredibly slow.
 
I upgrade. Then when the OS hits .2 I do a clean install. By then any bugs are out of it for the most part. It's not necessary to do a clean install or else Apple wouldn't offer an upgrade method. I've never had any problems with upgrading whatsoever. I just do the clean install at a .2 release out of curiosity sake, honestly. Every time I've done it I have never seen anything change speed wise ever.
 
Badrottie said:
Will ML clean install recovers lost space on SSD? I have no issues upgrading to Lion from Snow Leopard last year. I asked because I lost 40GB space by restoring to SSD from TM last weekend.
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Well no one want to answer my question so I went to Apple store yesterday and they helped recover lost space on SSD after installing ML. I got 60GB space back!!!

Thank you Apple Genius!! :apple:
 
Badrottie said:
Well no one want to answer my question so I went to Apple store yesterday and they helped recover lost space on SSD after installing ML. I got 60GB space back!!!

Thank you Apple Genius!! :apple:
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What was taking like 60GB of space? If I remember there was some installation data saved but it tooks like ~ 5GB or so.

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bbfc said:
I initially upgraded from Lion to ML on the day of release, but today I did a clean install and my MBP is now flying!
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Did you after clean install "manually" install all apps, settings, etc? Or did you use TimeMachine backup to restore whole user profile? I think, if I'll use TM, it will load all the crap from SL/Lion back to ML, right? :)
 
kemo said:
What was taking like 60GB of space? If I remember there was some installation data saved but it tooks like ~ 5GB or so.

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Did you after clean install "manually" install all apps, settings, etc? Or did you use TimeMachine backup to restore whole user profile? I think, if I'll use TM, it will load all the crap from SL/Lion back to ML, right? :)
Click to expand...

Before ML I had Lion 10.7.4 there was a problem with WIFI so I had to restore user folder from Time Machine I thought user folder would be overwrite but it seems not. After installing ML, Apple Genius found out there was 2 copies of SSD he deleted it and still not recover lost space he also found backup folder on my SSD. he deleted it and got 60GB lost space back.
 
kemo said:
What was taking like 60GB of space? If I remember there was some installation data saved but it tooks like ~ 5GB or so.

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Did you after clean install "manually" install all apps, settings, etc? Or did you use TimeMachine backup to restore whole user profile? I think, if I'll use TM, it will load all the crap from SL/Lion back to ML, right? :)
Click to expand...

I manually installed all my apps again and set everything up as new.
 
will always go for a clean install. because if something is wacky i'll always think its because i did an upgrade instead of a clean install. this way i can safely rule that out.
 
bbfc said:
I manually installed all my apps again and set everything up as new.
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Argghh, I hate this process, because there's a lot to set up, but okay...there's no other way :) anyway, thanks for the info.
 
I just upgraded. Didn't do clean install. Still, every thing is so fast I'm really pleased. I never think of Lion as buggy before, now looking back it felt a bit buggy. :)
 
Nozuka said:
will always go for a clean install. because if something is wacky i'll always think its because i did an upgrade instead of a clean install. this way i can safely rule that out.
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I wish I could agree with that logic - it's like saying: "Well, I had to blow up the whole block in order to take care of a rat infestation in my apartment." ;)
 
We just ordered our 13" MBP yesterday(arrival August 14th), so we don't know if it will come loaded with Lion or ML. This will be my first Mac, so assuming it comes with Lion, I am undecided about upgrading to ML, or doing a clean install to ML. I won't be loading any programs or files before I do one or the other, if that makes any difference.
 
I had Mountain lion as a partition and performance was horrible. Then i reinstalled mountain lion on 1 partition and now performance is much better.
 
matrix07 said:
I just upgraded. Didn't do clean install. Still, every thing is so fast I'm really pleased. I never think of Lion as buggy before, now looking back it felt a bit buggy. :)
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I had this same epiphany
 
I always nuke to glass when going from major version to major version. It's infrequent enough (or used to be, now it's up to once a year) that it wasn't an inconvenience, and I take the opportunity to clean out all the cruft I no longer use. For example, I don't drag over any apps from my backup. I reinstall them. Doing that gives me more incentive to say "OK, I never use this, so I won't bother".
 
I just realised when I did mine I forgot to backup my iTunes scripts. If you're doing a clean install, remember to backup everything
 
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