Why is mountain lion installing on my macintosh hd again?

Hey people. Just downloaded mountain lion and it was installing on my Macintosh HD. However as it was about to finish (less than a minute left), it started installing again! Is this something that I should be worried about? Anyone else have this happen to them? Any input will be nice. Thanks in advance.

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OS X installer copies the files and restart the computer for install

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Why is Mountain lion stuck at Checking "Macintosh HD" during installation

When installing Mountain lion i accept terms and conditions and then it gets stuck on Checking "Macintosh HD"... I left it for the whole day and it did not change.
Im am using a MacBook Pro bought in 2011 that is running OS X 10.6.8.
I have verified HDD in disk utilities and it says there are no problems.
I've tried restarting the computer but no change.
I have 4GB memory and 85GB available space.
Any ideas how to solve this problem would be great, Thanks.

Welcome to Apple Communities
If the disk repair doesn't work:
1. Do a backup with Time Machine
2. Create a Mountain Lion installer in DVD or pendrive (http://arstechnica.com/apple/2012/07/how-to-create-a-bootable-backup-mountain-li on-install-disk/)
3. Press Option key in boot and press the Mountain Lion disk
4. Erase the disk in Disk Utility and install 10.8

I have mountain lion installed (Version 8), why can I not attach a file in yahoo email on my apple

i have mountain lion installed (Version 8), why can I not attach a file in yahoo email on my Macbook?

What happens when you try?
Add Attachments
You also might look/post here.
Yahoo Mail Help

Why can't i access the app store after Mountain Lion install?

Why can't i access the app store after Mountain Lion install?

Hi There,
What happens when you try to access it? You've not given a lot of information for people to help you.

Mountain lion install disk

i want to make a mountain lion installer disc on a 16gb flash drive for my new macbook air with 10.8.4 already on it (as anybody would), but when i try to option-click the buy button at the app store it says "we could not complete your purchase osx mountain lion is not compatible with this computer". As it's a new computer, this implies an issue--does anyone know what it might be? --BTW following david pogue's mountain lion bk instructions, p 796 here--he also mentions that apple used to sell installer disks with 'lion', but stopped--[wish they hadn't]. i'm off to buy a hard drive so i can archive the whole lot & do it that way--but honestly, apple folks!
thanks

The Mid 2013 MacBook Air includes a special 10.8.4 build that can't be downloaded from the Mac App Store, so this is the reason why you see a message telling you that Mountain Lion is not compatible with your MacBook Air.
This also means that you can't create a Mountain Lion install USB drive until Apple launches a new OS X update, like 10.8.5, so all Macs will be using the same version and you will be able to download OS X. Anyway, in a new Mac, it's possible that you can only get OS X Mountain Lion from OS X Recovery, preventing you from creating an install USB drive.
What you can do is to use Recovery Disk Assistant > http://support.apple.com/kb/HT4848 Note that this won't include the installer, so OS X will have to be downloaded from Internet

Mountain lion install crashes-corrupted download

Twice now, after lengthy downloads to my 27" IMac running 10.6.8. the mountain lion install crashed in the early stages with the same error message that the download is corrupted. please delete the install package from the application folder and repeat the download. After the second try, I decided to try downloading Lion which I purchased early this year but never downloaded.
Any suggestions?

The installation could not be completed because errors were found on your drive. Boot up again while holding down the option key and the select Recovery partition. From there, open Disk Utility and first verify and then, if needed, repair the disk "Macintosh HD". If your drive is 'fixable' this will repair any errors.
Clinton

My macbook pro has mountain lion installed and it will not play dvds

my hubby's macbook pro has mountain lion installed, and will not play dvd's. It says it is unsupported, I also have a macbook pro but has snow leopard on it, mine will play dvd's. Please help me, I can't figure out why his won't play the same dvd's as mine.

The most frequent problem in an optical drive is a dirty lens. Use a lens cleaning DVD, a few shots of compressed air in the slot or a fine microfiber cloth (eyeglass lens cloth) wrapped around a business card and gently inserted inside the slot. If no success, the Apple store genius bar is the next stop.
Ciao

Why is Mountain Lion in "waiting" mode in my dock?

Why is Mountain Lion icon in "waiting" mode in my dock? Why is it not installing? I'm running a newer iMac with sufficient memory. I'm installing from Snow Leopard 10.6.8

Thanks for the advice. I selected cancel and restarted the process. It says it is downloading however, it disappeared and I chose to start the process again this a.m. I'm not sure whether or not it begins entirely again or carries on from before. It seems like a long, drawn out process, doesn't it? I've noticed the feed is starting so I'll let it run this morning and monitor the process.

Mountain Lion install results in blank gray screen.

I recently downloaded and installed Mountain Lion on my wife's late-2007 iMac. Unfortunately, each time, after the installer finishes and reboots, the computer sticks at a blank gray screen where normally the Apple logo would appear while things boot in the background. I have tried restoring from Time Capsule and re-downloading then reinstalling, but it produces the same result.
With the gray screen problem present, I've tried a Safe Boot, holding down Option to select a disk to boot from (nothing comes up when I do this, just the mouse cursor), and resetting the PRAM/NVRAM. I haven't really been able to find anyone else having this particular issue. The hard drive in the iMac is a little over a year old as we had to replace the old one. And from what my wife read, the late-2007 iMacs are Mountain Lion compatible.

saw this in another thread about a macbook pro slowing up after OSX Mountain Lion install:
the mac owner had mentioned his mac going very slow, and was told it could take several days for the new OSX to sort things out. Perhaps this explains my issue and perhaps yours.
"Yes this can be the case, even slow shutdowns and startups. But Hardisk space can also be a factor. Anything below the 10Gig mark of space left can cause extreme slowdowns."

Why does mountain lion "bunch up" all my microsoft office documents that I have open when I hit f3? When I had snow leopard for example, if i had 4 or 5 different microsoft office documents open at the same time I could hit f3 and easily pick one of them

Why does mountain lion "bunch up" all my microsoft office documents that I have open when I hit f3? When I had snow leopard for example, if i had 4 or 5 different microsoft office documents open at the same time I could hit f3 and easily pick one of them.
Notice how in the photo, I can't identify which MS office document I would like to switch too. Perhaps since the Dashboard and Desktop windows are at the top of my screen now Apple doesn't let you have all the applications take up the full screen and be sized individually so that you can have a better idea on what to pick.
I like the idea of grouping to an extent... If you have a bunch of random things it was hard for me to decifer between what was safari, chrome, or word. But now that they grouped them like this, if you have multiple pages of one program running, you can't switch between those pages easily like before.

If I wanted to open any of my Applework documents I had to open them one at a time and resave them with pages. This could take weeks.I have 1000s of apple work documents.
You don't have to open and re-save every AppleWorks document you have right now. Just wait till you need one, then do it. The documents aren't going anywhere.
Am I dealing with Microsoft? This was a BIG surprise to me that Apple would release an OS without testing all programs.
Frankly, it is not Apple's responsibility to ensure compatibiltiy with every piece of software available for OS X. That is the responsibility of the software vendor. Lion has been available to developers for several months before it's release, so Microtek had plenty of time to update their software. Yet they did not. How is that Apple's fault? I think Apple was very generous to give you a refund for Lion.
I'm not trying to belittle your frustration but I do think your ire is misplaced.

I bought a macbook pro with Mountain Lion installed. Can I install a copy of mountain lion on my other mac for free?

I bought a Macbook pro with Mountain Lion. Can I install Mountain Lion on my other mac for free? How do I do that? Thanks!

On the bright side, it's only $20.
And I would certainly like to have the ownership (and even a copy of the installer on my archive drive), "just in case."
Here are some questions -- which I cannot test because it's not my situation:
Has anyone acquired a pre-owned Mac with Mountain Lion installed but which shipped with an earlier OS version? For those in that circumstance:
Have you been able to apply Mountain Lion update(s)?
How about reinstall ML with Recovery HD?
After either updating or reinstalling, does ML appear in Purchases in App Store?
Just curious.

Can't open pics in Preview since Mountain Lion install

Hi - I use Preview to open my iPhoto pics and then save them at a smaller resolution for using on my web pages, blogs, emails etc. It's a bit cumbersome but it works. Now, since I upgraded to Mountain Lion on my MacBook (so it will sync documents with my iPad) blow me - I find I can't open files in Preview! I get a box headed 'icloud for Preview.' The text then says: 'You can move your existing documents to icloud by dragging them here from the finder or other apps.' There's then an option to cancel, and a greyed-out box saying Open, but of course I can't open anything! It means, really, that I have lost the ability to edit my pictures with Preview. Is this right? And is there anything I can do about it? Also, I notice my iPhoto icon has disappeared from my Finder so I can't open iPhoto from there. It's all happened since the Mountain Lion install. Can anyone help, please?

I don't know about your Preview problem and I am interested to see responses about it.
When you say no iPhoto in Finder. Do you mean iPhoto is not listed in the Applications folder? If you do a Finder search on iPhoto is it found. Mine is in "Bobs HD>Applications

I have a 15" MacBook Pro with Mountain Lion installed. I have partitioned the hard drive into two partitions. Is it possible to install Snow Leopard on the second partition? If so how do I do it?

I have a 15" MacBook Pro with Mountain Lion installed. I have partitioned the hard drive into two partitions. Is it possible to install Snow Leopard on the second partition? If so how do I do it?

If your MacBook Pro had Snow Leopard on it at one time then sure. (Early 2011 or earlier)
How to erase and install Snow Leopard 10.6
Obviously choose the second partition to install into. It has to be OS X Extended journaled formatted in Disk Utility (BootCamp software makes it a MSDOS/FAT32 formatted partition if you used that to partition with)
If it's a Early 2011 or Late 2011 that came with 10.7, it's possible, but it's not easy.
https://discussions.apple.com/thread/3264421?start=0&tstart=0
If you can't install Snow Leopard, there is a thread over at MacRumors how to run Snow Leopard in a virtual machine program under 10.7 or 10.8

HT4414 When I try to purchase Mountain Lion i get an error message: "We could not complete your purchase. The product distribution file could not be verified. It may be damaged or was not signed." I can purchase other apps, why not Mountain Lion?

When I try to purchase Mountain Lion i get an error message: "We could not complete your purchase. The product distribution file could not be verified. It may be damaged or was not signed."
I can purchase other apps, why not Mountain Lion. I get the same message on my wife's IMAC.

The only thing that worked for me was to boot in safe mode.
Power down. Then press power button and hold 'shift' key until grey screen with progress bar appears... Once booted and logged in just open safari and browse to applestore.
No trouble at all once I did this.
Hope it helps.

HT1338 Why does mountain lion make my computer run slow and my Safari too?

why does Mountain Lion make my computer run slow and my Safari too? Please help!

The problem is probably not mountain lion. It works just fine on my computer. And a few million others.
If your computer is having problems, you can try to fix it with some simple troubleshooting maneuvers.
Take a look at:
Mac OS X BASIC TROUBLESHOOTING & MAINTENANCE Tips Mountain Lion 10.8 Lion 10.7 Snow Leopard 10.6 10.5 Tiger 10.4 Why How To Tutorials

Why is mountain lion installing on my macintosh hd again?

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