Install mountain lion on a late 2013 iMac (currently running mavericks)?

I would like to install Mountain Lion 10.8.5 on my 27" iMac 14,2 currently running Mavericks 10.9.2?

Your iMac may have come with 10.8.4 so 10.8.5 ought to work. However, I don't think the Mountain Lion installer would let you overwrite Mavericks for a downgrade. Rather, you'd need to wipe the drive clean and do a fresh install. I'd suggest following these instructions for entering Recovery Mode and see which OS is offered for installation. If it's Mavericks, try the Internet Recovery option to see what the originally installed OS would be.
In any case, before you start installing or erasing, make a full, bootable external clone of your current installation.

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Cannot install Win 8 on a late 2013 iMac using bootcamp on 10.9

I'm trying to install Win 8 on a late 2013 iMac (purchased a couple of months ago)
I have a win 8 pro DVD, but obviously there is no DVD in this iMac. I usally use the DVD drive in my older 2009 iMac for any disk based installs but I can't appear to use it here.
I followed the instructions and downloaded a Win 8 Pro ISO from Microsoft to use with my authentication code, created a bootable USB using bootcamp, created the partition and rebooted. Once I'd entered the code I get to the install location but it says I cannot install on the partition created by bootcamp. Even if I format the partition it says I need a GPT drive but I have MBR, so won't let me install.
I tried several suggestions including creating aprtitions in various other programs and once I even got past that screen, but as soon as it tried to install I got another error saying the MBR was formatted incorrectly and it failed.
I had no issues installing Win 7 via bootcamp on the older iMac, but this one has me stumped. I used to think I knew a bit about computers, but I'm fairly new to Mac related issues as the older iMac has always just worked.
Any help would be greatly appreciated.

Hello,
I just installed Windows 8.1 on my Late 2013.
There are just a couple of things I had to do that deviated from the Boot Camp Installation Manual.
1. I downloaded my copy of Windows 8.1 as an ISO image AND as a bootable USB from the Microsoft site.
Not sure why I did that but it came in handy because Bootcamp was taking a very long time to copy the ISO onto the USB stick..
The ISO copying seemed to freeze up, but it's likely that it was just taking a long time, probably 20mins.
So, instead of waiting, I took the contents of the the USB startup stick and simply moved them over to the stick that Bootcamp had formatted for the ISO copy (I cancelled that copy function and deleted any files that had copied but didnt complete).
Once that was done, the machine rebooted from the USB stick and began the normal Windows setup process.
All went very smoothly except that my mouse was not working.
2. To get around the mouse issue, I simply plugged in a MS USB Mouse and it worked immediately.
The Bootcamp manual advised that the way around this was to 'click in upper right corner and search for Bootcamp'. Problem was, it was nowhere to be found.
So, using my MS mouse, I navigated to the 'DESKTOP' icon in Win 8.1 and found File Explorer, which showed my USB stick connected along with Bootcamp and the MS Support File (i.e. All the Apple Drivers).
I began manually clicking on all the driver files until realizing that there IS a Bootcamp executable which will automatically install the drivers for the Nvidia card, keyboard, camera, mouse, etc....
Once that was done, my installation was completed.
The entire process took about an hour, but now that I've done it, it really shouldnt take much more than 45 mins.
I have the late 2013 iMAC, with the GTX780M and 1TB Fusion Drive i5 Quad Core.
For those who are leery about doing this, please note that I'm a PC 'lifer' and this is my very first go-around with doing anything on an Apple product.
It all went much more smoothly than I could have imagined, but if you are not a PC person, you might be a little challenged finding the Bootcamp in File Explorer or doing anything in Win 8.1 to get over these minor hurdles.
Good luck!
I'm looking forward to getting STEAM up and running to see how this thing games!

Since installing mountain lion on my late 2008 macbook the cd/dvd drive isn't working won't ejects cd.

since installing mountain lion on my late 2008 aluminum macbook the cd/dvd super drive isnt working won't play or import media/music just ejects cd.
Any Ideas ?

Have you set System Preferences/CDs & DVDs to what you want to happen? This helped one person.
Here is an Apple support article, but the information is pretty basic:
http://support.apple.com/kb/PH10614

Cannot install Windows 8.1 on Late 2013 iMac

Attempting to install Windows 8.1 (retail) using Boot Camp Assistant but when I get to the "Select disk to install windows" screen, nothing appears.
I'm using a retail copy of the Windows 8.1 full installer DVD and I have the midrange 21.5" late-2013 iMac.

Installed my retail copy of Windows 8.1 from Windows 7 without any hiccups or hacks. Windows 7 can be installed in trial mode for free and easily by downloading a legal ISO from Digital River. Create a USB installation with Boot Camp Assistant and proceed as normal using the Windows 7 ISO. During Installtion, skip entering a license. After Windows 7 is successfuly installed, boot back into OSX and create just a drivers USB using Boot Camp Assistant. Boot back into Windows, insert your retail Windows 8.1 disc or use your download and let it install. Be prepared to do several "Hold-Option" boots to kick it into windows. Installation probably had 6 reboots.
Digital River ISOs
Windows 7 Home Premium 32Bit:
http://msft.digitalrivercontent.net/win/X17-58996.iso
Windows 7 Home Premium 64Bit:
http://msft.digitalrivercontent.net/win/X17-58997.iso
Windows 7 Professional 32Bit:
http://msft.digitalrivercontent.net/win/X17-59183.iso
Windows 7 Professional 64Bit:
http://msft.digitalrivercontent.net/win/X17-59186.iso
Windows 7 Ultimate 32Bit:
http://msft.digitalrivercontent.net/win/X17-59463.iso
Windows 7 Ultimate 64Bit:
http://msft.digitalrivercontent.net/win/X17-59465.iso
Thanks, and I hope this helps whoever needs it. I always hate when someone finds a fix and never reports back.

Should I do a clean install of Mountain Lion on a late 2009 iMac or will I find hardware/driver issues?

I have a late 2009 iMac (2.93 Ghz Intel Core Duo, 4GB of ram, model id is 9.1) running Lion right now. I upgraded it all the way from Leopard using the standard keep-all-your-apps-and-settings way. After looking at the hardware requirements for Mountain Lion (and my success with running Lion) it seems that my good ol' iMac is still capable of running it fairly well. But I don't like the idea of "stacking" upgrade after upgrade (*coughs*, clean freak!). I like the idea of starting out clean this time because so many years of use has filled my mac with a lot of crap I no longer use.
So I would like to know your sane advice, and if there's anything I should check out before attempting this. Especially I'm concerned about hardware/driver related issues like for example: the webcam or speakers no longer working. Also, if there's something I'm overlooking please point it out.
Thank you in advance for any help you guys can give me. I'll be very grateful!

If it wasn't a Mac computer that originally came with either Lion or Mt Lion Pre-Installed by Apple when new you would not be able to connect to the Online Internet Recovery system. It is a Feature of the Mac EFI Firmware system. And it will only install whichever version of the Download only version of OS X that originally came on that system.
My MBP came with Lion Preinstalled. Even if I have Mt Lion installed on the hard drive the Online Internet Recovery system would always point my MBP to the Lion download as that was the original version of OS X that came on my Mac.
No real authentication needed. Since your Mac came with Mt Lion no matter what newer versionof OS X you ever install the OIRS will always point you to Mt Lion and ONLY Mt Lion.
It is something different, but not completely different, from the built in Recovery HD partition on the internal drive.
No worries as during the install of MT Lion on your SSD the installer will Recreate the Mt Lion Recovery HD partition on your SSD.

HT201178 With the coming of OSX Mountain Lion, will there be support for a late 2006 iMac (currently running OSX Lion

With the coming of OSX Mountain Lion, will apple be supporting a late 2006 I mac currently running OSX Lion?

Ahhhh. Well, now you have earned a "Slap Kappy" coupon good for one slap. Expires in 30 days.
The 64-bit kernel thing will leave a lot of use behind. My main machine is a 2006 Mac Pro on which I've spent some money putting in two 4-core CPUs and an ATI 5770 GPU in the past year. If I want to run ML I can't do so. The only options I have for a desktop Mac is either a newer Mac Pro model - post 2007 - used or refurbed or a recent or new iMac. This assumes the Mac Pro line may be dropped. Apple has been very mum on that.
Clearly, Apple wants to get users of older hardware to buy new machines in order to run ML now and in the future. Because it is possible to boot the older models with the 64-bit kernel via some hacking, Apple might have been able to install ML on them by adding some code and retaining 32-bit drivers where needed, but they've chosen not to take that route. I think it's a bit of a marketing ploy to help drive up sales of new Macs, but I appreciate that Apple has chosen to abandon legacy support in the past in order to avoid having an OS like Windows - bloated by support for older and older hardware.

Installing Windows 7 on Late 2013 iMac w/ Fusion Drive

Sorry in advance for the long post, but I have tried to exhaust all possibilities, and bring as much knowledge about our environment to the table to avoid confusion.
Here's our goal: Install Mac & Windows on a Late 2013 iMac with a 1TB Fusion Drive
Install our Mac Image with Deepfreeze on Partition 1
Install our Windows 7 x64 Image with DeepFreeze on Partition 2
Here's why our goal cannot work out of the box:
Deepfreeze for Mac, is not supported on a Fusion Drive. Now before anyone says "just don't use deepfreeze"...we are using it, and that is that.
In order to get our existing image to work on the iMac, we had to split the Fusion Drive.
Splitting Up the Fusion Drive
We booted into Recovery, Opened up terminal, retrieved the LvGUID, deleted it, and split up the SSD from the HD.
So now, we have a 128GB SSD, and 1TB HD showing up under Diskutilitiy.
We then partitioned the 1TB HD, into two, 500GB Partitions. One for Mac OSX 10.9.4, and the other for Windows.
The 128GB SSD is going to be used for scratch space, temp, etc. And is irrelevant at this time.
Deploying our Mac Image
After splitting the Fusion Drive, we netbooted and installed a "NetRestore" of our image. Worked completely fine, no issues. DeepFreeze Works fine, the 128GB SSD shows up just fine, and the other 500GB Windows Partition shows up fine. All drives / partitions can be written to with no problem.
Deploying our Windows Image
Deployed our Windows Partition image as we have done in the past, by booting into a windows PE Disk. (We have other various 2009, 2010, and 2011 iMacs across campus, with NO FUSION DRIVES installed, and dual boot them successfully using the same procedure. Minus the splitting of the fusion drive part of course) After the Windows image is deployed to the windows partition, we then boot it up to a Windows 7 Install disk to fix the MBR, Bootrec, and BCD options to allow it to boot properly. Here's where we run into issues: Upon getting the Windows 7 Install screen, the USB Keyboard and Mouse, DO NOT WORK.
Here's the options we've tried to get them to work properly
1. Tried another known working Mac USB Keyboard & Mouse = Failed
2. Tried a known working Windows Keyboard & Mouse = Failed
3. Plugged Just a known working Mac Keyboard into each USB Port to see if recognized = Failed
4. Plugged Just a known working Windows Keyboard into each USB Port to see if recognized = Failed
5. Plugged Just a known working Mac Mouse into each USB Port to see if recognized = Failed
6. Plugged Just a known working Windows Mouse into each USB Port to see if recognized = Failed
7. A Windows 8.1 Recovery USB will boot and the USB Mouse & Keyboard are recognized and installed! (YAY!!) However, we cannot repair a Windows 7 install with Windows 8.1..
BootCamp Drivers & Support Media
Downloaded the Current BootCamp Support drivers to enable the USB and other various drivers to be loaded during setup (Placed the $WinPEDriver$ and AutoUnattend.xml, and BootCamp folder on the Root of a USB, and modified a Windows7 Installation disk and placed on the root as well) The drivers do not load. Have also placed on a brand new USB2, and USB3 flash drive formatted at FAT32, to see if that made a difference, which it did not. The BootCamp USB made within Mac, it loads saying "Now booting into Boot Camp Assistant Created USB Drive..." or something like that (Don't remember the exact Message)
Side Note:
Restored Fusion Drive to its original State, and booted from the BootCamp USB drive, still no usb Mouse & Keyboard Support.

I have same issue
Tried everything differend hdd,ssd as well
Basically when trying instal win 7 via iOS maverick when reboting and windows booting to the first scree everything freezing cant do much.
Also tried install clear ssd without any system, but soon after format ssd or hdd I have error that I cant use this disk to install windows!!!!!!!!!!!!!!!!!
What is funny Windows 8 installing without any problem!!!
what is going on APPLE??wher is support
This issue I have only on Late 2013 on my other Late 2012 this issue not exist and everything working as should.

Programs dont open after installing Mountain Lion

Hi!
After I installed Mountain Lion last week is my iMac(4 cores, late autumn 2009) very slow and several programs dont open anymore.
When I click on them they bounce in the dock and vanish again. I approved in the security tab to open all programs, also not `Mac Store programs`.
The only way to get these programs started again is by unpacking them and than they work for one reboot. After 1 reboot they dont open again.
What can I do with this?
With kind regards,
Silvia

Launch the Console 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 Console in the page that opens.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left.
Click the Clear Display icon in the toolbar. Try the action again. Post any messages that appear in the Console window – the text, please, not a screenshot.
Important: Some private information, such as your name, may appear in the log. Edit it out by search-and-replace in a text editor before posting.

Some USB ports no longer working after installing Mountain Lion?

Some of my USB ports are no longer working after installing Mountain Lion onto my 21' 2011 iMac. I used to plug in my iphone 4S and charge it, or transfer files onto my iPad but none of the ports no longer work to do this. Funnily enough, other equipment plugged into the works. I have tried changing the cable. Any ideas?

In my experience, the USB ports on the back of an Apple monitor can be re-enabled simply by unplugging and plugging back in the device in question. You might also check to see that the USB Monitor hub shows up in System Profiler. My Apple monitor USB ports experienced no changes in moving to 10.4.7.
bd

Ok here goes nothing i have a late 2009 iMac 27 11.1 intel bought it refurbished and they installed mountain lion 10.8.4 on delivery w/o disks i think ran lion orig. idk & its been all problems 10.8.5 M.L so tried Maverick 10.9 now worse please help me

ok here goes nothing i have a late 2009 iMac 27 11.1 intel bought it refurbished and they installed mountain lion 10.8.4 on delivery w/o disks i think ran lion orig. idk & its been all problems 10.8.5 M.L so tried Maverick 10.9 now worse please help me.....i still have backups of software for mountain lion 10.8 however i need to throw everything on a usb toshiba 1TB external storage for backup, plus from what ive read being i needed to try to go back and update the efi and frimware for my original model but when i found the right one it wont accept it.....and now i just tried to reinstall my mountain lion probably shoud have left in the cloud til i got backed up ...which i now needed to move my previous backed up stuff off the drive to reformat it properly as i read it being toshiba needs to be guid hard drive mac im relatively new to the whole mac thing and im just as ****** off as i was with PC ....lol i just wanna record music and have a steady workflow i do have a new 4s iphone and cloud storage but i believe my computers hacked or got malware or just ****** from incompatiable software ......and keychains not working for admin either PLEASE tell ,me what to do thx .....i will be so grateful im good with recording software and stuff bad with computers programing lol HELP me

Hardware Overview:
Model Name:          iMac
Model Identifier:          iMac11,1
Processor Name:          Intel Core i7
Processor Speed:          2.8 GHz
Number of Processors:          1
Total Number of Cores:          4
L2 Cache (per Core):          256 KB
L3 Cache:          8 MB
Memory:          16 GB
Processor Interconnect Speed:          4.8 GT/s
Boot ROM Version:          IM111.0034.B02
SMC Version (system):          1.54f36
Message was edited by: lnwko

I have bought a new imac late 2012 and I want to wipe clean my 2008 mac and install Mountain Lion on the old computer for my kids to have

I have bought a new imac late 2012 and I want to wipe clean my 2008 mac and install Mountain Lion on the old computer for my kids to have.
What do I need to do?

Boot your Mac from the System Install DVD that came with it, and erase the HD using Disk Utility. Then, reinstall the OS from the disc. Give the disc to your kids since it must always accompany the Mac it came with.
After the OS installation is complete and the Mac restarts to begin its new owner setup procedure, just shut down the Mac. Your kids can take it from there.
If you purchased Lion or Mountain Lion from the App Store, you cannot transfer it. The Apple ID you used to purchase it is required to maintain and / or reinstall the OS. Unless you want to supply your own Apple ID to your children for their use, they must purchase their own copy of Mountain Lion using their own Apple ID.
If they do not already have an Apple ID and you want them to have Mountain Lion, you will need to create one on their behalf. This does not change the above procedure - just give them the Apple ID and password you create in addition to the Mac and its discs.

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.

Can I install mountain lion on my Imac

I have a late model 2006 Imac with 4gb of RAM, I would like to install mountain lion, is this possible.

No.
(125674)

May I install Mountain Lion on my iMac MA199LL/A? It has a 1.83 GHz Core Duo.

May I install Mountain Lion on my iMac MA199LL/A? It has a 1.83 GHz Intel Core Duo processor.

You can not.
OS X Mountain Lion system requirements
To install Mountain Lion, you need one of these Macs:
iMac (Mid 2007 or newer)
MacBook (Late 2008 Aluminum, or Early 2009 or newer)
MacBook Pro (Mid/Late 2007 or newer)
MacBook Air (Late 2008 or newer)
Mac mini (Early 2009 or newer)
Mac Pro (Early 2008 or newer)
Xserve (Early 2009)
Your Mac needs:
OS X v10.6.8 or OS X Lion already installed
2 GB or more of memory
8 GB or more of available space

Problem installing Windows 7 64-bit on late 2013 iMac 27"

Is Windows 7 64-bit compatible with this computer?
Hardware and software:
• Late 2013 iMac 27", 3.5 GHz I7, 16 GB memory, 1 TB hard drive (no fusion drive)
• Mac OS 10.9.1
• USB thumb drive
• Boot Camp Assistant 5.1.0
• Windows 7 64-bit install disk iso image downloaded from Microsoft
Install steps:
1. Use Boot Camp Assistant to install Windows 7 install (from iso image) and Apple Support Software (creates WININSTALL USB drive)
2. Use Boot Camp Assistant to create 50 GB Windows partition on iMac internal drive and start Windows install
3. Complete initial install steps until given option to select install partition
4. Select 50 GB partition. Error message that partition is not formatted correctly. Use Advance Options to format (presumably to NTFS)
5. Select 50 GB partition again and click "Next"
6. Get error message "Setup was unable to create a new system partition or locate an existing system partition. See the Setup log files for more information."
7. Install quits at this point
I have successfully installed Win 7 on another computer (2010 Mac Pro) using these steps. I also tried installation on the iMac using an iso image created from my original Win 7 64-bit install disk, with the same installation error as above.
I'm wondering if Windows 7 and/or Boot Camp is compatible with this iMac. Any suggestions will be appreciated.

I am awaiting delivery on the exact model you have and have been researching how much trouble it will be to put 64 bit windows 7 ultimate on my machine when it gets here. I'm not pleased at what I've been reading so far. I have not seen the two other posts but yours is enough to concern me.
Have you also seen that 10.9.1 update may be responsible for this? I've seen where 10.9 caused some problems with the bootcamp app but then the process was completely hosed with the 10.9.1 update. Are you seeing this as well?
Being a life-long mac dude, it pains me when their stuff just doesn't work because it usually just does. ****, that's why I started on a mac in the first place.
The support site says that they come with 90 days of complimentary support. Is this not an issue they should be responsible for addressing via support? Or is that just one long wait on hold waiting to talk to somebody that won't consider this a pure apple issue?
I was also curious if your install .iso contains both 32 and 64 bit versions?

Install mountain lion on a late 2013 iMac (currently running mavericks)?

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