Reinstall mountain lion on macbook  retina

hey guys, I want to reinstall mountain lion on macbook retina. I've been having some bugs so want to see if a clean install would help. My hard disk is partitioned though.. I have a windows 7 boot camp partition, so would a reinstall of mountain lion delete or affect in any way my windows 7 partition ?
what are the steps to reinstalling mountain lion ? My macbook retina originally came with version 10.8 . I'm guessing all of my programs/apps on mountain lion  would be deleted with a fresh install ?

It should not. A backup is always a safe precaution though.
Allan

Similar Messages

  • Impossible to reinstall Mountain Lion on Macbook Air

    Hi! Recently my mid 2011 air started crashing safari and then firefox. As per the forums I deleted add-ons and made sure that the latest software was downloaded from the app store. The 3 days ago the computer crashed and would not restart. It would not allow me into recovery either with an icon and contact apple support (World symbol with a warning ! and apple.com/support - 6002F). So...I installed 10.8.3 on a 1TB extenal hard drive and downloaded the installer program also (using my old Macbook pro). I then used this as a boot disk for the Air which was fine and I was able to then erase the Air's hard drive reformat (uncludind reducing the size of the main partition by a couple of gigs - as a support blog recommened. Then I was able to use the restore function form the external hard drive to try and do a web based reinstall of 10.8.3 - alas it spent 40mins downloading and then when I tried to install the OS it said it was corrupted and so I repeated that 3 more times to no avail (def of stupidity). Next I tried using the ext boot to load up and then downloaded 10.8.3 from the app store and then install it on my clean SSD (I had made sure that the disk did not need to be repaired) . Nope no joy here again an eternity download it and then the installation but at the end it just did not complete the install with some rediculous time to complete of 36hrs...eventually getting to 55mins then hung indefinitely. Having done this a few times with the same result I tried downloading a new 10.8.3 from the app store (while the computer was runing of the external boot drive) same result installation could be not completed.
    Next I trieved my dusty snow leopard installation disk from a drawer and tried to use an external DVD drive to install this old OS with the hope that I could update later. Nope! Without the boot HD attached: the computer would not detect the ext drive...on restarts I pressed c button I held the alt button down - nothing the drive would fire up (PS I had checked the drive and disk worked on my MacBook and it did) and then shut down and the computer reverted to a grey screen with a pretty white apple logo! Next I tried booting up with the ext hard drive and installing snow leopard to the clean SSD - nope apple says no - you're not allowed do that while running snow lion as a boot disk! I'm 2 days at this now! I live in Ireland so there are no "genius" bars - in case that is a suggestion.
    Currently I'm copying the contents of the Snow leopard disk to my clean SSD drive (having booted in Mountain Lion) for a hoot to see if the computer may boot directly from its own hard drive - I doubt this but I'm getting desperate. When that doesn't work my final throw will be to erase the ext hard drive and try install Snow leopard on it and use that as the boot drive then maybe Mr Apple will allow me to install Snow Leopard on the SSD!?
    Someone please help!

    OK last evenings efforts were futile!
    Thanks for the replies but as I said there is no apple store with in Ireland with a guru bar (whole country!) therefore not an option! Using my boot disk I can get into recovery and it will allow me to download M/L (again for 30-40mins) then it will not install it properly! I have tried some other options today including deleting the app store cache with the reg command: open $TMPDIR../C/ - didn't help my "This Copy of the Install OS X Mountain Lion Application can’t be verified". I just can not understand why it will not just let me reinstall software I have paid for on a computer I have bought...especially as it allowed me to creat a boot disk with that same software (which I am now using to type this!).
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  • Reinstall Mountain Lion on 13" macbook pro retina

    hi! i am trying to reinstall mountain lion on my new 13" macbook pro retina, however, i cannot proceed and i encounter the message "We could not complete your purchase. OS X Mountain Lion is not compatible with this computer." please help!

    I've called Apple Care and they learned me to the following in order to complete a clean install from Mountain Lion on a MacBook Pro Retina (otherwise it won't work): http://support.apple.com/kb/PH11273
    But, like Clinton said, shouldn't your rMBP come with Moutain Lion on it? And if so, why can't you upgrade to 10.8.2 because I could (with software update) - but my problem was to clean reinstall ML on it from the App Store (that you stil can't do with a rMBP btw).
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  • Reinstalling Mountain Lion on brand new MPB Retina??

    Hi Everyone,
    I bought my first MBP retina literally 2 days ago. Anyways, last night I saw that I had an update in the iTunes store. The update was for iOS7. Without much thought, I downloaded the update. When it was finished downloading, I clicked "restart now". A few minutes went by and nothing happned. The cursor was gone and everything seemed frozen. So I manually restart the computer.
    When the computer rebooted I kept getting some kind of kernel panic on the boot screen. Nothing would happen. So I rebooted and held command + r. I then proceeded to reinstall a new copy of mountain lion because that was the only thing I could think to do.
    Everything appears to be fine now but I have a few questions.
    1) I didn't run disk utility and erase the disk before reinstalling a new copy of mountain lion. Is that a problem? Do I have two versions of the OS saved on my hard drive or did the new download just overwrite the previous version?
    2) Why was an update for iOS7 showing up in my itunes store?
    3) Should I worry about having to reinstall mountain lion after literally using the macbook for only a few hours.
    Thanks for your help

    New2Mac12 wrote:
    1) I didn't run disk utility and erase the disk before reinstalling a new copy of mountain lion. Is that a problem? Do I have two versions of the OS saved on my hard drive or did the new download just overwrite the previous version?
    2) Why was an update for iOS7 showing up in my itunes store?
    3) Should I worry about having to reinstall mountain lion after literally using the macbook for only a few hours.
    Thanks for your help
    No it is not a problem and the new installation simply overwrote the previous one
    The iOS 7 upgrade is ONLY for iPhones and iPads and should have had no effect on OS X 10.8 (Mountain Lion). I am not sure what you actually did because the normal process for installing iOS 7, or any iOS update or upgrade including iPhone and iPad apps downloads to a folder in the iTunes folder. In fact the iTunes store is the only place to get new or updated software for the iPhone and iPad. Do not confuse the iTunes Store with App Store which is a separate application for downloading and installing Mac OS X updates and software. There is an update to iTunes 11.1 that must be downloaded before attempting to download and install iOS 7. I suspect that is what you actually installed, but I have no idea why it could or would mess up Mountain Lion.  For the last couple of days the Apple download servers have been completely swamped by all the iOS 7 downloads and reports of the downloads taking two and three hours are common. The problem may have been related to that, but that is purely a guess.
    No you should not be concerned about the reinstallation. As I said I do not know what happened, but you should not have been able to install anything to do with iOS 7 on your new Mac.
    Message was edited by: Joe Bailey

  • I have reinstalled mountain lion on my MacBook Pro and can't get the games back App Store says they'll already installed how can i download them can anyone help

    I have reinstalled mountain lion on my MacBook Pro and can't get the games back App Store says they'll already installed how can i download them can anyone help

    I have eactly the same problem - it seems that the downloaded version on MBA is version 6.0 and on iPad is is version 2.0 -
    Issue is when i tried to save the presentation on MBA Keynote 09 - Keynote crashed.
    I tried to save is as Powerpoint in MBA and it crashed as well!
    Message was edited by: Innovaxin

  • How do I Reinstall Mountain Lion on a used Macbook Pro?

    So I just recently purchased a 2011 Macbook Pro off of Craigslist.  A friend picked it up for me, installed an extra copy of Windows 8 he had for me under my name, and made sure the OSX Mountain Lion side worked fine.  Somehow, after the first time I restarted OSX it would no longer boot up, but Windows worked fine.  So I booted up in the recovery partition, reformatted the OSX partition, and attempted to install Mountain Lion.
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    Well, you need to log in to the App Store on a Mac, using your AppleID, and purchase Mountain Lion. Then, on the konked out Mac's Recovery Partition you'll be able to sign in with the same AppleID and download the ML installer you are now eligible to use.

  • I'm unable to reinstall Mountain Lion OS X on my Macbook. What should I do?

    I was given a MacBook Pro from a friend, but it was still left with everything on it. I started to restore it to factory settings so it would be wiped clean and I could use it as a new computer. Once I was about to reinstall Mountain Lion OS X, it notified me that I was unable to because "this Apple ID was not used to purchase Mountain Lion OS X." Im afraid that if I purchase it, it won't work because its linked to my friends Apple ID, and I'd be wasting $20. What should I do?

    sabrinapascual,
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  • How many times can you reinstall Mountain Lion?

    Since I bought the Early 2013 15" MacBook Pro retina laptop used only 17 battery cycles on it now (2.7 with 16GB ram running Mt. Lion) computer I have not reset it. I spoke to Apple and it is registered in my name, I made a new Admin. account and password and Apple had me delete the original owners. I took off anything he had left on it. Applecare also I bought in my name. Apple said I didn't have to reset it and would be fine so I left it. They deauthorized the previous iunes account and the previous owner gave me his ID to deauthorize the computer. It was already deauthorized when I checked. He then changed his password for his security. It runs beautifully and has a Samsung screen.
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    If I reset to new how many times am I able to reinstall Mountain Lion? If I decide to sell it later will I be able to reset it again with no problem for the new owner?
    Thank you for your help. This forum is a source for many of us new owners to solve things.

    As long as you do the download with your Apple ID, it'll be in your name. Reverting back can be a little involved. If you have that in mind, you should make a full backup of your clean install of ML and save it somewhere. Then you can just copy the image back with Carbon Copy Cloner. External drives are cheap, that's how I'd do it.

  • How do I reinstall Mountain Lion in English on a system that was originally in Chinese?

    I'm trying to help a friend who was given a used 13" MacBook Air (A1369) by the Chinese exchange student staying with him. It needed a screen repair, which was done, and we were able to change the display menus to English which is fine for general use. BUT... The previous owner had all kinds of Chinese games and programs as well as a partitioned HD. The plan was to just erase and reinstall Mountain Lion (which it came with, we THINK) and he'd have a fresh start.
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    Is there a way to buy new copy of Mountain Lion with a new Apple ID that will be in English and then install it on a computer that was already running Mountain Lion? It seems I should be able to DL the OS to a USB drive and then just boot and install from that. But I'd have to DL on another Mac with its own ID running Lion. (Or use a Linux PC which seems like an even worse option.)
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    Try posting again in the forum for ML, since it hardly seems to have anything to do with your hardware.
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  • Need help reinstalling Mountain Lion

    I was trying to reset my MacBook Air to its factory settings. I was following a YouTube video and I got as far as erasing something. Then I went to reinstall Mountain Lion and it told me my itunes account didn't have Mountain Lion purchased (I bought it from someone a month ago). SO I purchased it and have the PDF with the code. However, I cannot access the Mac App Store to redeem the code. What do I do now? My MBA is stuck in the utilities mode.!

    If it is a late 2010, it probably came with Snow Leopard installed, which means you will have to have the install DVD that came with the machine.  There is a retail version of Snow Leopard available from the Apple on-line store for $20, but that is version 10.6.3.  The 2010 machines came with 10.6.6 and will not install from the retail DVD.  If you do not have the original install disk, you can call Apple Customer Service and they will send you a disk for a fee of something like $20, you need the machine serial number to get the correct installer version.
    Once you have that disk you can install the 10.6.6 version from the disk and then go to Software Update to on-line update to 10.6.8.  From there, you an go to Mountain Lion or Mavericks if your model meets the specs in http://support.apple.com/kb/HT5842

  • Troubles reinstalling Mountain Lion

    I installed a new hard drive in my mac and want to do a fresh install.  I did the firmware upgrade for internet recovery to my mid-2010 macbook pro and am trying to use internet recovery to reinstall mountain lion.  It says that my apple ID has not purchased Lion, which I know for a fact I purchased Lion and Mountain Lion.  I called apple support on the phone and the guy was super unhelpful and told me to go in store.  Soonest genius appoinment is not for a few days and I need my computer ASAP.  I would use the 10.6 disc that came with my computer but it will not boot to that either (by using "c" or "option").
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    I have about the same problem: I bought Mountain Lion and when I try to install on my new ssd drive on macbook pro i7 early 2011 it says that I dont have Lion. I have made a bootable USB memorystick with Mountain Lion but when I start the installation from it, I can't see my ssd in the window of hard drive install location. Only the USB drive is visible.
    If I start network installation, I don't have a Mountain Lion option, only Lion. In Lion installer my ssd is visible but I can't complete the installation because of the bug with the Apple ID wich block me. I don't understand why do I have to have Lion if I already bought Mountain Lion.
    The ssd is corectly formated. I even try to make GUI partiton but all in vain.
    Please help us with this problem.
    Thank you

  • Reinstalling Mountain Lion issue.

    Reinstalling Mountain Lion issue. After I erased my HD and reinstalled OS (w/o file transfer from other Mac option) - opened Safari and saw my old bookmarks there already. Does that mean that reinstall didn't go correctly?

    Thanks for the reply, I will try that tonight.
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    'Booting a new MacBook Pro (Late 2011) from a retail 10.6.3 disc resulted in a black screen and a repeating 3 beep pattern. This is due to missing Sandy Bridge drivers. Apple will ship a 10.6.6 (iMac) or 10.6.7 (MacBook Pro) installer disc'
    My OS was the 10.6.3 that came with my iMac. I phoned Apple, they wanted me to pay £18 for 10.6.6
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  • Reinstalling Mountain Lion after update to 10.8.1

    Hello
    I got a problem,
    i got a Mac Mini and a MacBook unibody.
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    The problem isn't with the OS, it's with your system.
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    Reinstall Mac OS X
    Get help online
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    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.

  • How long does it take to reinstall Mountain Lion on a new hard drive?

    Due to performance/corruption issues, I erased my MacBook pro's hard drive. Now, I'm attempting to reinstall Mountain Lion (then do the upgrade to Mavericks). However, after about 5 hours of it doing the reinstall and downloading files (I have it connected to a network cable), I went to bed.
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    Thank you for any assistance.
    Rich

    Wish I had your DSL speed.  iTunes suggests I have about 7 1/2 hours still to go!  Just glad it is giving it it's best shot.
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  • Best way to reinstall Mountain Lion on MBP?

    Hi.
    My wife has had a MacBook Pro since 2009. Over the years it has become soooooo slow. She's got tons of stuff on it including old versions of software, and programs she never uses. Honestly, I think it's just bogged down from all her crap over the years. So here's the problem I'm having. I want to back it up and do a fresh install, but I don't want to use Time Macine because I'm afraid all of her old programs and bugs and such will just go right back on her computer. So the only thing I've come up with is clicking and dragging all of the folders onto an external drive and then back again. Is there a better way? A better program or process or tutorial? Any advice would be massively appreciated. THANK YOU!
    Specs
    Mac OS 10.8.4
    2.53 GHz Intel Core i5
    4 GB 1067 MHz DDR3
    500GB HDD

    If there is only one account, your Wife's, than you can just drag the "Macintosh HD" onto a large enough external hard drive. (***I would highly suggest you check to make sure the same amount of GB are on both drives after you have moved it all over to the external hard drive. You can do this by:
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              Click about this Mac
              Click more info
              Click storage
    hope this solution works!)
    To reinstall Mountain Lion from scratch, follow these instructions below:
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    If you’re not connected to the Internet, choose a network from the Wi-Fi menu (in the top-right corner of the screen).
    Select Disk Utility, and then click Continue.
    Select your startup disk from the list on the left, and then click the Erase tab.
    From the Format pop-up menu, choose Mac OS Extended (Journaled), enter a name for your disk, and then click Erase.
    After the disk is erased, choose Disk Utility > Quit Disk Utility.
    Select Reinstall OS X, click Continue, and then follow the instructions.

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