Retinstall back my OS X Mountain Lion after i mistake update with OS X Yosmite

how can i retinstall back my OS X Mountain Lion after i mistake update with OS X Yosmite

If you Mac originally was shipped with ML, you can try Internet Recovery (Command+Opt+R) to re-install ML. Please backup your data first. Your internal disk may use CoreStorage rather than plain JHFS+ filesystem.

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Will i have big problems if i go back to Mountain Lion after having upgraded to Mavericks?

Will i have big problems if i go back to Mountain Lion after having upgraded to Mavericks? I also updated iphoto, pages ,numbers etc

According to the App Store, Pages compatibility is v10.9 or later.
Same for iPhoto and Numbers.
Those apps will not run on v10.8 Mountain Lion.

If I were to drag and drop files from an OSX 9 onto an external hard drive (1 TB), assuming there is still plenty of space left, will I be able to use this same external hard drive to back up my iMac (Mountain Lion)?

If I were to drag and drop files from an OSX 9 onto an external hard drive (1 TB), assuming there is still plenty of space left, will I be able to use this same external hard drive to back up my iMac (Mountain Lion)? And would it ask me if I want to initialize (thus erasing it) or eject the hard drive like the OSX 9 did?

I was trying to follow this thread because I was curious about the OS 9 installation - until I realized you have another thread going about the very same subject, albeit with a different subject line.
FWIW: it is best not to double post - things get far too confusing after a while.
@ Kappy (in case you hadn't seen the other one):
https://discussions.apple.com/thread/5054178?tstart=0

Since installing mountain lion i have a problem with mail. when i delete a message close and open mail the message has come back. please help!

Since installing Mountain Lion i have a problem with Mail. I delete a number of messages from the same person but keep the newest message in my Inbox. I actually delete them from the Trash. The next time i open Mail the deleted messages are back again. Can anybody please help as this is getting annoying. Thanks in Anticipation.

Problems such as yours are sometimes caused by files that should belong to you but are locked or have wrong permissions. This procedure will check for such files. It makes no changes and therefore will not, in itself, solve your problem.
First, empty the Trash.
Triple-click the line below to select it, then copy the selected text to the Clipboard (command-C):
find ~ $TMPDIR.. $ -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 -o -acl $ 2> /dev/null | wc -l
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V). The command may take a noticeable amount of time to run. Wait for a new line ending in a dollar sign (“$”) to appear.
The output of this command, on a line directly below what you entered, will be a number such as "41." Please post it in a reply.

How do i reinstall mountain Lion after installing maverick. Maverick is not compatible with FileMaker 13 server. Maverick is now objecting to reinstalling Mountain Lion. Where do I go from here? Help?

How do i reinstall mountain Lion after installing maverick. Maverick is not compatible with FileMaker 13 server. Maverick is now objecting to reinstalling Mountain Lion. Where do I go from here? Help?

If you can download the ML installer you can make a bootable install media by using:
http://liondiskmaker.com/
If your Mini came with ML you can also boot to Internet Recovery
OS X: About OS X Recovery
and it will install ML. Make sure you boot to Internet Recovery and not the Recovery Partition. If to the partition you will only get Mavericks.

Reinstalling Mountain Lion after update to 10.8.1

Hello
I got a problem,
i got a Mac Mini and a MacBook unibody.
On both pc's i have the same problem i bought Mountain Lion, installed it, and updated it to 10.8.1
Now after a while my Macbook doenst startup anymore, and today my Mac Mini doesn't startup anymore,
i have to reinstall Mountain Lion again..
What the ****?? what's up? bad update??? or bad system with many bugs??

The problem isn't with the OS, it's with your system.
Boot up holding command-r keys into your Recovery Volume.
The screen should give you these choices...
Restore from TM backup
Reinstall Mac OS X
Get help online
Disk Utility
First run Disk Utility Repair Disk, if you get errors run until no errors reported or reports "the disk cannot be fixed". Then, choose Reinstall OS X. This will be an install "in place" and shouldn't effect any of your own data or settings.

Do I have to activate AHCI mode on a Mountain Lion after a new SSD drive installation?

Hello All,
Do I have to activate AHCI mode on a Mountain Lion after a new SSD drive installation?
I have a new Corsair GT SSD sata 3 drive on my mack book, I have read on corsair web page that is good tho activate the AHCI and TRIM but I cant find information about how to do this on OS X.
Thank you all

That's information for non-Apple hardware. You can activate TRIM using third-party software: TRIM Enabler 2.2. However, most new SSDs should not need TRIM activated on the Mac.

How to turn on usernoted in mountain lion after i accidently turned it off?

how to turn on usernoted in mountain lion after i accidently turned it off?

Usernoted was continually crashing and eating up memory. I clicked on it in the activity monitor and it took me to a place where I could turn it off. Without thinking I did so. I think I turned it off in the console or the terminal. I don't remember exactly what was written. I just clicked to allow it to be turned off. Since then I cannot upload anything to facebook directly from my imac or from safari when I use share. But iI still get facebook notifications in the notification center. I have restarted and even shut down and then restarted and also logged out and in and I still can't share.

When trying to download Mountain Lion after click on buy I get this message: The product distribution file could not be verified. It may be damaged or was not signed.

when trying to download Mountain Lion after click on buy I get this message: The product distribution file could not be verified. It may be damaged or was not signed.

The Apple Support Communities are an international user to user technical support forum. As a man from Mexico my first language is Spanish. I do not speak English, however I do write in English with the aid of the Mac OS X spelling and grammar checks. I also live in a culture perhaps very very different from your own. When offering advice in the ASC, my comments are not meant to be anything more than helpful and certainly not to be taken as insults.
Always search the forum before posting. This is asked at least three times just below your post.
https://discussions.apple.com/thread/3604789?tstart=0
https://discussions.apple.com/thread/4153268?tstart=0

I have an Mac air 2011 and after install osx mountain lion when I do update to some programs like iMovie and iPhoto and make sleep mode to dowenloaded it doesn't dowenloaded in sleep mode it stop please help me

I have an Mac air 2011 and after install osx mountain lion when I do update to some programs like iMovie and iPhoto and make sleep mode to dowenloaded it doesn't dowenloaded in sleep mode it stop please help me

i guess you could put the aiport utility app on your iphone, click on the aiport express there, it will show you how many devices are connected to it and the mac addresses of those devices.

Downloading Mountain Lion on Mac Book Pro with max RAM and after 20 hours only 1.50Gb downloaded of 4.37GB. What gives?

I have a MAC Book Pro with maximum RAM added and tried to download Mountain Lion and after 20 hours only 1.50GB downloaded of 4.37GB. Very slow and set my machine not to sleep overnight or anything. Should I give up and stick with my snow leopard?

I think that since Apple just released the Mountain Lion 10.8.2 Update and iOS 6, their download servers are being somewhat overloaded. It may pay to try again in a day or two after things calm down a little. It also depends on where you live and how fast your ISP download speeds are.
Hope this helps

I can't install OX mountain lion after download

I can't install OX mountain lion after download,the message says error of identity, delete the application and download again. My identity is ID apple, i dont understand, what i did wrong?

Shortly after starting the installation appears the message and not continuous, therefore I delete and return to lower it. At this time I'm going download again. After download it, I write to you again. Thanks.

Switch back from Mavericks to Mountain Lion

I have tried to switch back from Mavericks to Mountain Lion, due to the battery drain problem, following the steps included in the tutorial https://discussions.apple.com/docs/DOC-6162
The problem is that when I format the HD and I click on 'Install' it appears a big screen which says 'Install Mavericks". I want to install Mountain Lion (that I have in the pendrive), or at least Lion, but I am unable to do that, there is no option to choose any other operating system. Is there a way to rollback to any previous system?
If not, would it be possible to extract the HD from the computer, format it completely (including the recovery partition) in another computer, install it again in the original computer and perform a clean install from my pendrive?
I have no external drive with Time Machine or similar.
Thanks in advance.

Welcome to Apple Support Communities
If you have got a Time Machine backup created in OS X Mountain Lion, connect the external drive with the backup, hold the Option key while your computer is starting and choose the external drive. Then, select the option to restore the Time Machine backup and follow the steps. Note that your hard drive will be erased.
If your Mac came with Lion or Mountain Lion, you can use Internet Recovery by holding down Command, Option (Alt) and R keys while your Mac is starting up. Use Disk Utility to erase the hard drive and reinstall OS X or restore the backup

If I upgrade to Lion now will mountain lion be a free update?

If I upgrade to Lion now will mountain lion be a free update?

I really hope that Apple will do the right/ethical thing and give recent (within the 8-9 months) purchasers of macbook, macbook pros, macbook air, and people who just bought single OS copies of Lion OS-either a free copy of Mountain Lion or a huge discount price on the OS ($5.00 max ). Let's be honest here....Mountain Lion is the patched up Lion. Apple couldn't release an update large enough to fix the problems with Lion so they instead created a new OS. They know that is the truth.
As someone who just bought a macbook pro that came pre-installed with Lion (had no choice really but to accept that or completly wipe it clean and try to put on Snow Leopard, but I was hesitant to because of being warned not to try that on the pre-installed macbook pros.) I don't feel it is right that I would have to pay for another OS when I was already supposed to have a functional OS included with my recent major purchase. Let's think about it for second: when I got a powerbook g4 around 2004/05 I paid about the same price as this macbook pro i now own. With that I got the lap top, the installer OS cds (a functional OS I might add), manual, stickers, a vga adapter, s-output cord, ac adapter, ac extension cable, and phone cord. With the 2011 macbook pro I got the laptop, manual, stickers, ac adapter, ac extension cable, and cloth to wipe off my screen. I didn't get any s-video output or vga adapter, and I'm actually glad that they didn't give me any lion installer cds because that would have been a waste of optical disc. What came free in a box over 6 years ago (vga adapter display port) is now $30 extra at the apple store. Also, no s-video. So I can't hook it up to an external monitor or tv. (and no, I can't just go and buy a fake one on amazon because I have analog so i would on top of that buy a pc converter box. ) I honestly wouldn't mind buying the converter box... had I gotten a free vga display adapter with my laptop. Also let's compare a minor difference in applecare: back then I got a receipt and a box with some info and a applecare test cd that was good for diagnostic utility testing. while maybe a bit old fashioned, I still like having cds that I can use for testing problems. This time, I didn't get any info box or cds, or a receipt for that matter--well i did get an email saying I had extendedapple 3 year but I never had the chance to make a phone confirmation that proves I am in service. I feel that is a bit risky sending people home without a hard copy of your purchase. They could just claim you didn't buy it. maybe i'm just old fashioned that way. To be clear, i can't compare the actual service of applecare of present day and former because so far I haven't had enough use of it to compare it yet.
What I'm getting at is that with the money they saved on gypping me with included accessories and a function OS, surely they could afford to right the situation by giving me a free copy of the new OS Mountain Lion. I might add, that way back when I had my powerbook g4 I went into to apple's genius bar one day and was trying to get an issue fixed regarding the itunes razor phone I had just purchased (way back before iphone had just come out) the music wasn't transferring from my computer to my phone. The guy was very very nice and he said he couldn't fix the problem with the phone (the usb turned out to be damaged) and he upgraded my panther to tiger for free!
That is an example of good customer service. That is example of keeping loyal apple customers.
---also--I found something posted on another forum that I felt I just had to share that further demonstrates examples of extrodinary past customer service from Apple:
Posted: Tue Jul 27, 2004 2:35 am
I had the logic board in my iBook 800/12.1" (Nov. '02) replaced 3 times. After the 4th failure occured a couple of weeks ago, I called Apple Support and requested a replacement machine. They refused, and were fairly rude about it.
So, in a moment of desperation, I sent an email to Steve Jobs. I did not demand a replacement machine. I simply said that I was extremely displeased with the quality of my iBook and I would no longer be purchasing or advocating Apple products. I wished Mr. Jobs the best of luck in Apple's future endeavors.
Two days later, I received a call from Apple's Corporate Executive Relations team. The woman I spoke with apologized profusely for my troubles with the iBook. She explained the logic board replacement program to me in great detail, and then, without any prompting from me, asked if a new iBook G4 (as a replacement) would cause me to reconsider leaving the platform. **** yes. So, I'm typing this post on a brand new 1Ghz, 12.1" iBook G4
Needless to say, despite the trouble with the machine, and the heartburn of dealing with Apple Support - in the end I'm left feeling fairly impressed with Apple. In the end, they did the right thing, and kept a customer.
* Edit for grammar/spelling
< Email Edited By Host >

Just upgrade my MacBook Pro Mid 2010 to Mountain Lion and tried to connect with Apple TV 3th gen. through Airplay and couldn't mirrorring video on my LG Smart TV screen. Just paid US 99.00 for Apple TV plus US 19.99 to Mountain Lion for nothing @?$%

Just upgrade my MacBook Pro Mid 2010 to Mountain Lion and tried to connect with Apple TV 3th gen. through Airplay and couldn't mirrorring video on my LG Smart TV screen.
Just paid US 99.00 for Apple TV plus US 19.99 to Mountain Lion for nothing @?$%& !!!!
Back again to mini display to hdmi cable.
could you help me????

It is stated that mirroring requires recent hardware (2011 or later)
http://support.apple.com/kb/ht5404
However you can still use 3rd party solutions like Airparrot which do it via software

Retinstall back my OS X Mountain Lion after i mistake update with OS X Yosmite

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