How to downgrade to Mountain Lion?

Hi I had bought Mac Mini 2011 version from apple store in 2012 March.
It came with Lion, I upgraded to Mountain Lion a year ago and system was pretty good.
When I upgraded to Mavricks I rue the performance degradation.
I am confused if its the CPU Coalescing and battery perfomance optimization that works terribly wrong on this Mac Mini.
May be the config of mine is not fit for the Mavricks schema of performance optimizations.
To me Launcher, iPhoto and iTunes are damp squib in performance while they just worked so good on mountain lion.
I seriously want to get back to Mountain Lion please let me know how I should proceed?
Or will Apple assure me of a fix for this performance issue ASAP
Note for the Mini I have is:
Model Name:          Mac mini
Model Identifier:          Macmini5,2
Processor Name:          Intel Core i5
Processor Speed:          2.5 GHz
Number of Processors:          1
Total Number of Cores:          2
L2 Cache (per Core):          256 KB
L3 Cache:          3 MB
Memory:          4 GB
Boot ROM Version:          MM51.0077.B0F
SMC Version (system):          1.75f0
Serial Number (system):          C07H9147DJD1
Hardware UUID:          1C68260F-612B-5BF5-9C97-80B04D427898

Hi all,
The problems with my Mavericks has healed. It had taken 2 days to settle down. Now I could see the performance better than before, for most operations. iPhoto performance is better than what it was just after the installation. However it drags when I scroll through the thumbnails. Other than than the overall performance of the system is improved. Mini doesn't have batteries as Laptops so I dont gain from the enegy front. I am happy that the system improved after this long a wait. However will want some quick patches for iPhoto and overall if any so that I dont have to wait for 2 days for those apps to improve from my initial using of it since install.

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How to downgrade from Mountain Lion back to snow leopard with Time Machine

The final straw was the horrible mouse sideways page wiggle while trying to scroll down and read safari pages. Even after turning the feature off, tech support said it will still wiggle a little. That and the HORRIBLE grey icons everywhere was enough to send me back to my beloved iMac I loved when I bought it. I'll give up the iMessage and the few new items ML gave me. But as many others said, what I got new was far less than what was taken away.
So what tech support had me do was this. Even though the apple engineers said it would not work, apple tech support had me try it and it worked for me so good luck. Engineers said that after you install mountain Lion, it messes with ALL your time machine back ups and won't revert back to snow leopard even if you select a snow leopard date back in time. That didn't happen to me. I have a 2010 27 inch iMac
This worked for me but PROCEED AT YOU OWN RISK
Export individually any email folders or photos or data you will lose between now and the date you are reverting back to.
1. Insert Snow Leopard DVD that came with computer. The install disk not the applications. Make sure time machine external drive IS connected.
2. Restart computer and when you hear The Mac chime, hold down the C key and then it will take several minutes to boot up from the DVD.
3. Select the little blue triangle to continue in English.
4. When it gets to the screen that says "continue" stop. There might be a screen or two before this one I can't remember but either way stop at the word continue.
5. Go up to the top left and find the UTILITIES pull down menu and select disk utility.
6. In the window that opens up, Select the Apple drive which should be the very top one in the window.
7. Select erase.. it should be Mac OS extended journaled
8 select erase and maybe a password. It only takes a few seconds
9 go back up to UTILITIES in upper left and then select restore from time machine or backup or whatever it says. It's the last choice.
10. Select the external time machine drive and navigate to the date you last had Snow Leopard running and that will be the date it restores to. You will lose any data between now and then but you can export your mail, export photos, and other items separately. I only stayed on ML For a few days before hating it enough to go back so I had no loss of data except a few emails.
11. Hit RESTORE. And then it will take several hours. When you restart it, it should come right back to that day you selected as if ML was just a bad thought on someone's drawing board.   If for some reason it still comes up ML, Then they said to erase HD Again (steps 1-8) and then manually drags back USER folder or individual folders with Mail, photos etc.   if this way doesn't work, have another plan printed out so that you are not stuck by this one.
Good luck. Proceed at your own risk..

The ultimate solution:
You need an USB of at least 5 GB and the Snow Leopard Install DVD.
1. make a bootable USB with Disk Utility in it:
     a. download the Mountain Lion Installer from the App Store
     b. quit the installer after download
     c. find the installer in the Applications folder
     d. option+click in it and select "Show Pakage Contents"
     e. go to Contents>SharedSupport to find there the InstallESD.dmg file and mount it by double-clicking it
     f. with the Disk Utility, restore its contents into your USB
2. boot from the USB:
     a. restart the computer and hold-down the option key while booting
     b. select the USB and boot
3. run the Disk Utility and format in ONE partition the HD of your computer
REMEMBER: BACKUP YOUR HARD DISK BEFORE DOING ALL THESE, YOUR DISK WILL BE EREASED AND DATA BECOME UNRECOVERABLE OTHERWISE
4. insert the Snow Leopard DVD and reboot from it
5. follow the on-screen instructions to install OS X 10.6
After this, you can, if you will, upgrade to Lion or stay in Snow... Good Luck!!

How do i downgrade to Mountain Lion

I upgraded to OSX Maverick but did not like it at all. please tell me how to downgrade to Mountain Lion.

http://support.apple.com/kb/PH14176

I've,just,bought,a,new,Mac,with,mavericks,,but,I,don't,like,mavericks,,how,may,I ,downgrade,to,Mountain,Lion,10.8.5?

I've just bought a brand new iMac with OS X Mavericks but I dont like Mavericks and it also has problems with some apps I use, how may I downgrade to Mountain Lion 10.8.5?

You can't.
You cannot install or run an OS X version lower than what is, originally, installed on your Mac.
Your only option maybe to purchase a download code for OS X Mountain Lion here,
http://store.apple.com/us/product/D6377Z/A/os-x-mountain-lion
Purchase a high quality USB 3.0 or Thunderbolt hard drive, formatted as an OS X exetnded (journaled) drive with a GUID partition scheme and install OS X 10.8 Mountain Lion to the external drive and boot and run your new iMac from this external drive.
This is the only optioh to run an older OS X version on a new Mac.
I have a 2009 iMac that the lowest OS X version I can run from the iMac's internal hard drive is OS X 10.6.1.
I have an external drive with OS X 10.5.8 and can get my iMac to boot and run this older OS X version from the ex eternal hard drive.
Here is a good source for quality external hard drives.
http://eshop.macsales.com/item/Lacie/9000353/
http://eshop.macsales.com/item/Lacie/9000303/
Your only other option is to return your new iMac within 14 days for a full refund and look for older iMac, either new or used that came with OS X Mountain Lion as its original, preinstalled OS X version.
Good Luck!

I do update at Maverick, I want to do downgrade at Mountain Lion. How can I do that?

Hi I have a problem! I have a MBP 15 mid 2013, i7, 2.6 GHz and I do update at Maverick, I want to do downgrade at Mountain Lion because i think my mbp moves more slowly. How can I do that?

Not that easily. There is a very helpful user tip by ds store to assist you if you wish to do so:
How to revert OS X back from Mavericks

Thinking of upgrading to Yosemite - but want to be able to downgrade to mountain lion - How?

Thinking of upgrading to Yosemite - but want to be able to downgrade to mountain lion - How?
Hi all.
I am wondering if I upgrade to Yosemite is there a way that I will be able to downgrade / revert back to mountain lion if I find out that too many of my most essential applications are no longer working?
I have read there have been compatibility issues between some of my most necessary / favourite applications I use in mountain lion and Mavericks, which is why I never upgraded to Mavericks.
However , I am noticing in the app store there are a lot of apps I am interested in which I no longer able to purchase / download because they require Yosemite, and mountain lion is out-dated.
However, if I upgrade my OS, I am afraid of incompatibility with the most important apps in my workflow though.
Thanks.

Hi Arthur thank you very much for your response.
Sorry for my late reply.
My following question is summed up in the last sentence of this post.
[is only one time machine backup possible per external backup hard drive? Or can I make separate Time Machine backups for separate purposes?]
I went ahead and installed Yosemite.
There are some things I like about Yosemite and I might trial it for a little bit longer,
but after a couple of days of trials and trying out, I've decided that I think I generally prefer mountain lion better,
and I will reinstall it , and get a disk image of Yosemite and run that as a Virtual Machine when I need it.
[^ This is what I should have done in the first place.]
Before I installed Yosemite I [stupidly] used Time machine to back up only my application folders / application support / general system files,
[I used system preferences to exclude everything else in the TM backup] so that I would not have to reinstall my applications / essential system structures.
I did not back up the rest of my files and folders / whole machine though.
I should have done this.
I just didn't want to wait for about 800 gb of data to transfer [impatient].
[in retrospect I should have run Yosemite through a virtual machine within Mountain Lion to see if I liked it before installing it completely].
With Yosemite installed would I be able to make a SEPARATE time machine backup of all my files / documents / media folders in Time Machine on Yosemite, and use this to re-install these on Mountain lion if I downgrade ?
Or is only one time machine backup possible per external backup hard drive ?
Thanks.

Downgrade to mountain lion

how do i downgrade to mountain lion from mavericks?

Revert to a Previous OS X
Revert to former OS from Mavericks

How do you erase mountain lion to install snow leopard?

Hi, My mother now has a new to her late 09 mini that originally shipped with snow leopard. When she bought it it came with mountain lion preinstalled from a private seller. We were thinking that to be on the safe side that it might be better to erase and install what's on it just to be sure it is secure. I tried to erase and install snow leopard from a disk but it says that the installer is not compatible with this version of osx(mountain lion). Question: How do I erase mountain lion and install snow leopard?
I've read here that there is possibly a built in recovery disk that I can use to erase and reinstall mountain lion. Q: Is there a built in recovery disk available in my situation? and if so should I use it or be even safer by installing snow leopard instead?
Thank you,

I think I found the answer (from sl install disk use disk utility to erase then install sl). Thanks for looking.

I do not have a high speed internet connection. How can I get Mountain Lion on a disk for install?

I do not have a high speed internet connection. How can I get Mountain Lion on a disk for install on my 24" Imac?

As long as you use your Apple ID to purchase it, I don't see why they wouldn't let you download the installer on one of their Macs and put it on a pocket drive.
Or, a friend with a high speed connection?
I agree with you about the delivery method, just trying to help you get what you want.

How do I redownload mountain lion for a clean install on the same machine without purchasing again?

I purchased mountain lion and upgraded my OS. The system seems to still be having some issues and I'd like to do a clean install with the new OS. How do I redownload mountain lion so that I can make a bootable disk and do my clean install?

You should be able to just go to the App Store and select Download again. If that doesn't work, try holding down the option key while selecting "Buy".
Good luck,
Clinton

Hi, I have a late 2008 iMac with a new hard drive. How do I install Mountain Lion from my bootable USB flash drive.

How do I install Mountain Lion to a new hard drive without having the recovery partition on it.
I have the USB flash drive with software on it but when I switch my Mac on all I have is a white screen & a flashing question mark.
ATB,
Steve.

Did you use LionDiskMaker or DiskMaker X?
Boot the machine with the option key down until you see your bootable USB stick. Select the latter, and reboot.
When the installer boots up, you will first need to choose Utilities and Disk Utility. Select the target HD device name and then the partition tab. Select 1 partition, name it Macintosh HD. Format is Mac OS Extended, and option is GUID. Apply. Exit Disk Utility and return to the installer, which will now show your newly partitioned HD as available for install.
When OS X is installed and all updates applied, press shift+command+U and run disk utility again. Verify/repair permissions and verify the boot disk.

Clean hard drive before selling; how do i get mountain lion on a disk for re-install?

Hope to resell old macbook pro and wish to clean hard drive. Need a CD of OSX to reinstall after cleaning. How do I get mountain lion on a CD?

Mountain Lion does not come on discs of any kind. But you don't need one. You'll find instructions for getting your machine ready for sale here:
How to prepare your Mac for sale

How do i download mountain lion on to a ubs drive

how do i download mountain lion on to a ubs drive

DL it to your internal drive. Before installing go to Applications and copy the "Install OS X ML" onto your usb. Then install from that.

How do i intall mountain lion on a new hard drive

How do i do it?
I bought a new 13" MBP a few weeks back and have now got my SSD. I realise that Apple no longer give out OS install discs and i don't have mountain lion purchased on my app store as it came with my laptop. So how do i install mountain lion on my new hard drive without having to buy mountain lion.

Option 1 - Newer Mac's like your come with internet recovery. Which means if your drive fails or is corrupted or in your case your install a brand new drive, internet recovery will let you reinstall the OS you are eligible for. So replace your drive and boot your system with cmd + R keys pressed down for 15 secs or so and your machine hooked to the internet. This will install ML from apple in your case.
Option 2 - Clone or backup (your entire system using time machine) your hard drive to a external USB disk. Replace your drive and then restore the new drive from the clone or backup.
Check this site for related articles .... http://nyacomputing.com/category/os/mac-os-x/

How do I install Mountain Lion on both my iMac Desktop and my wifes MacBook

How do I install Mountain Lion on both my iMac Desktop and my wifes MacBook Pro?

Open the app store, purchase ML. go to second computer open app store select purchases at the top and click download. This is provided both computers use the same account.
http://www.apple.com/osx/how-to-upgrade/

How to downgrade to Mountain Lion?

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