Become a MacRumors Supporter for $25/year with no ads, private forums, and more!
  • Did you order new AirTags? We've opened a dedicated AirTags forum.

patseguin

macrumors 68000
Original poster
Aug 28, 2003
1,636
487
Has anyone else noticed a serious degredation of performance since installing Mountain Lion? I have it on my i7 MBP and also my i7 iMac. Both are very slow and I get long beach balls when I try to do just about anything.
 

Dustman

macrumors 65816
Apr 17, 2007
1,335
155
Seems fine on mine. I'd recommend a clean install if you're having issues. Im sure that's come across your mind already though. I only trust clean installs myself.
 
Comment

patseguin

macrumors 68000
Original poster
Aug 28, 2003
1,636
487
Seems fine on mine. I'd recommend a clean install if you're having issues. Im sure that's come across your mind already though. I only trust clean installs myself.

Normally I'd think of that, but AFAIK I would have to install Leopard, then the Lion upgrade, then the Snow Leopard upgrade. Is there a way I can just wiped the drive and install Snow Leopard?
 
Comment

Dustman

macrumors 65816
Apr 17, 2007
1,335
155
Normally I'd think of that, but AFAIK I would have to install Leopard, then the Lion upgrade, then the Snow Leopard upgrade. Is there a way I can just wiped the drive and install Snow Leopard?

Just copy your DMG for Mountain Lion to a USB drive or DVD and boot from it. Google if you need help :)
 
Comment

patseguin

macrumors 68000
Original poster
Aug 28, 2003
1,636
487
Just copy your DMG for Mountain Lion to a USB drive or DVD and boot from it. Google if you need help :)

I think I might try that. Since I installed it, I guess I have to re-download it in order to copy it :-(

EDIT: Do you boot from a USB stick on the Mac by holding down a certain button like you do for booting off DVD?
 
Comment

Dustman

macrumors 65816
Apr 17, 2007
1,335
155
I think I might try that. Since I installed it, I guess I have to re-download it in order to copy it :-(

EDIT: Do you boot from a USB stick on the Mac by holding down a certain button like you do for booting off DVD?

Just hold down option while your booting (same as bootcamp). Here's a link that explains the different ways to do it. http://support.apple.com/kb/ht1948
 
Comment

robgendreau

macrumors 68040
Jul 13, 2008
3,394
287
Before you do what could very well be a useless act (reinstalling), could you tell us WHAT is slowing your Mac? What processes?
 
Comment

patseguin

macrumors 68000
Original poster
Aug 28, 2003
1,636
487
Before you do what could very well be a useless act (reinstalling), could you tell us WHAT is slowing your Mac? What processes?

No clue. I did however make a Mountain Lion USB stick and did a clean install. Things seems to be a little snappier but certain things seem unusually slow. For instance, clicking the Apple menu yields a spinning beach ball for 4-5 seconds, then I click on system preferences and it takes a few seconds to pop up. Pre-Mountain Lion there was no delay in clicking menus and the process of brining up the system prefs panel was instant. I wouldn't expect this kind of performance on an i7 system with 8GB of RAM. Maybe the upcoming patch will fix something. At least I have a system cleaned up of some garbage and am now reinstalling Logic Pro. I use this MBP for music production and live gigs and I can't have a spinning beachball when performing so hopefully I've solved it.
 
Comment
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.