Mountain Lion won't let my computer boot..

I installed mountain lion, and it installed then when I restarted it, it sat at the gray Apple boot screen. I held option and ran disk utility to repair anything and nothing was wrong. Now I held option again and am using the "search the internet for help" option. Someone please help, how do I fix this? My iMac is late 2009

Well, I ended up booting into the Recovery partition and selected "Reinstall Mountain Lion".
After it downloaded for about an hour an a half it reinstalled the operating system and then had me restart the computer.
I restarted and instead of going through the setup process, I was asked to login.
The new password worked! and all my stuff was still there!
I guess it was good I didn't wipe the drive before doing the reinstall, not sure what went wrong to begin with but now things are going well again. Hurray!

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Cannot install Mountain Lion - my iPhoto won't quit and Mountain Lion won't let me do a force quit

I'm trying to upgrade to Mountain Lion but when it ries to quit all programmes to install my iPhoto won't quit as albums are being sync'd. I try to stop and quit but it won't. I then try to force a quit and Mountain Lion won't let it. help!

if you don't mind interrupting the album sync, you can do a hard shutdown of the mac by pressing and holding the power button down for 10 seconds to make sure it's all the way off.
you can then do SMC reset which is described in the following article:
http://support.apple.com/kb/HT3964
after doing this turn on the mac, click on the black apple then force quit and make sure all apps are closed
open app store and try again to install the mountain lion

Mountain Lion won't let me send mail. I have to re-configure every time I log on

Mountain Lion keeps me from sending messages. I have to re-configure everytime I send mail.

If you have more than one user account, these instructions must be carried out as an administrator.
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.
Select "system.log" from the file list. Copy the words "Starting standard backup" (without the quotes) on this page and paste into the String Matching text field. Note the timestamp of the last message shown. Clear the text field and scroll back in the log to that time. Post the messages timestamped from then until the end of the backup, or the end of the log if that's not clear.
Post the log text, please, not a screenshot. If there are runs of repeated messages, post only one example of each. Don't post many repetitions of the same message.
Some personal information, such as the names of your files, may be included — edit that out, too, but don’t remove the context.

I am running mountain lion 10.8 but my computer won't accept updates

as mentioned i am running mountain lion 10.8 but my computer wont accept updates to 10.8.1 or 10.8.2 there are yellow marks over the hard drive when i try to install/open the DMG.
WHAT DO I NEED TO DO TO CORRECT?

Open About This Mac from the Apple menu and check if you aren't alreay running 10.8.2. Otherwise, you are running a beta version.

Mountain Lion won't install on 10.7.4. Suggestion from Apple is to completely erase harddisk and install Leopard Snow Leopard Mountain Lion. Is there no other way to install Mountain Lion

Mountain Lion won't install on 10.7.4. Suggestion from Apple is to completely erase the harddisk and install Leopard > Snow Leopard > Mountain Lion.
Is there no other way to install Mountain Lion?

I tried and failed for several hours to install Mountain Lion, and was repeatedly getting the "Recovery System" cannot be created error. I tried all the tricks: resizing the drive partition, booting from an external boot drive, all to no avail. After reading other users struggling with the same issue, I had determined it to be a boot camp drive error. However, I didn't want to have to erase and begin anew when I came upon a possible solution. I had long ago renamed my boot camp drive with a "." (".windows" for me) in order to avoid having the partition show up on my desktop. So, I boot into windows and renamed the c: drive without the "." ("windows"), and reboot into os x. The install then went off without a hitch. I hope this will be helpful for others struggling with this issue that may have renamed their boot camp drives in a similar manner.

HT4245 my iMessage on my macbook pro mountain lion won't work.

this is a very frustrating problem
my iMessage on my macbook pro mountain lion won't work.
it keeps on saying that ive entered the wrong passcode.
i even have my firewall turned off
plz help

Ok...
So I bought my MacBook Pro second hand, and it came with no installation discs, but I got Mountain Lion and had it installed and decided to back it up to a disc in case of this scenario. I followed some instructions to make a bootable disc and used it to install a fresh copy of Mountain Lion back when I first got it.
My problem is that without the boot partition of my MacBook's hard drive it doesn't seem to want to boot the disc.
Since I didn't want to buy a disc and I don't have another MacBook or know anyone near me that does, I decided to download a hackintosh iso and use it along with my other laptop to install iPC 10.5.6....this installed successfully and my hopes were that my MacBook would be able to boot it, so I reinstalled my MacBook's hard drive and to my surprise it booted, although not normally. Since it is hackintosh it has some rewritten boot features so it's not a true OSX, but it is fully functional. Since I finally had OSX booted I figured I was in the clear and would be able to install Mountain Lion from this, but then I found out that you have to have Snow Leopard 10.6.8 or later in order to install Mountain Lion.
Now I'm stuck with a hactintosh version of Lion and still no way to get back to Mountain Lion, is there anything I can do now that I have a functional OSX installation?

Mountain Lion won't allow me to save photos from Mail directly to iPhoto (as you could in all other recent OSX). Tried opening iPhoto and then click/drag each photo onto iPhoto icon on dock (as Help instructed) but the photo will not drag. Suggestions?

Mountain Lion won't allow me to save photos from Mail directly to iPhoto (as you could in all other recent OSX). Tried opening iPhoto and then click/drag each photo onto iPhoto icon on dock (as Help instructed) but the photo will not drag. Suggestions?

I have real a lot of posts that say to click Command+Option while opening iPhoto and this will open the Photo Library Repair window, but... this is not happening.
Be sure you're holding the correct keys and that you're holding them long enough. Depress them before clicking on iPhoto and don't let go until the menu shows up.
If you don't want to lose those photos, make a back up now. Hopefully it's not too late.

HT204347 Mountain Lion won't install on my laptop. I'm trying a fresh install

Mountain Lion won't install on my laptop. I'm trying a fresh install

Which OS X is currently installed?
Make sure your Mac meets Mountain Lion requirements > System requirements for OS X Mountain Lion

I have big problems with mountain lion. you can not have a boot disk system I resulted in the need to re-download the os from scratch impiegandoci 8 hours, it is outrageous even with windows 95.

I have big problems with mountain lion. you can not have a boot disk system I resulted in the need to re-download the os from scratch impiegandoci 8 hours, it is outrageous even with windows 95.
at least that the operator has confirmed to me that he called me. I also have problems with either the start of the mac with the power off. I can not understand if it crashes or is just very very slow.
Finally, I have a problem with the external hard disck. I often said to have been ejected incorrectly (not true) and I start to restore the startup recovery disk because disk utility is ineffective from the normal operating system .. is a shocking thing, but how you reduced. in four years it had never happened. seem to have windows or worse. Wake up.
I am an Italian, alas, and then I would like an answer to my language because my € are the same as German French or English.

You are on Windows 2000, you do not have a "Firefox" button, and should consider yourself to be fortunate in that you still have menus and don't have to do anything to get the menus back instead of the "Firefox" button. (The same applies to Windows XP users).
Use the "File" menu to get to Import. You are not on Windows 7 or Vista, and don't have to put up with the nonsense added for Aero.
If you want the "Firefox" button you can get it with View -> toolbars -> (uncheck) Menu Bar. The menu bar and the "Firefox" button were supposed to be mutually exclusive (which is impossible in some cases without being incompatible).
Once you are using the "Firefox" button ...
Use the "Alt" key to view the menu bar (temporarily) containing File, Edit, View, History, Bookmarks, Tools, and Help. On Windows 7 and Vista, the menu bar was hidden by default in Firefox 4 and above. These menu items are more or less available under the "Firefox" button which has the most used of the built-in Firefox menu items available in a different format.
To get back to having menus again. "Firefox" button -> Options (second column) -> (check) Menu Bar
You can make '''Firefox 7.0.1''' look like Firefox 3.6.*, see numbered '''items 1-10''' in the following topic [http://dmcritchie.mvps.org/firefox/firefox-problems.htm#fx4interface Fix Firefox 4.0 toolbar user interface, problems (Make Firefox 4.0 thru 8.0, look like 3.6)]. ''Whether or not you make changes, you should be aware of what has changed and what you have to do to use changed or missing features.''
* http://dmcritchie.mvps.org/firefox/firefox-problems.htm#fx4interface

I just bought a new iMac and am new to the desktop Mac. I read you can get a free upgrade to Mountain Lion if you bought your computer after June 11,2012. Do I have to do something before Mountain Lion is released? If so what?

I just bought a new iMac and I am new to the Desktop Mac. I read you can get a free upgrade to Mountain Lion if you bought your computer after June 11, 2012. Do I have to do something before Mountain Lion is released? If so What? Thanks

Just check in with this link when ML is released for instructions on how to claim your upgrade.
http://www.apple.com/osx/uptodate/

My mountain lion won't download, says downloading but no progress

My mountain lion won't download, says downloading but no progress

Same problem. Appears to be related to the availability of OS X Mavericks now. Here is another post on this issue: https://discussions.apple.com/thread/5503509?tstart=60

Three finger or two finger gesture to move back and forward between pages of file only work on safari, unlike with old os. this new lion won't let me do it. Any help?

three finger or two finger gesture to move back and forward between pages of file only work on safari, unlike with old os. this new lion won't let me do it. Any help?

I have decided to dedicate this thread to the wonderful errors of Lion OSX. Each time I find a huge problem with Lion I will make note of it here.
Today I discovered a new treasure of doggie poop in Lion. No Save As......
I repeat. No Save As. In text editor I couldn't save the file with a new extension. I finally accomplished this oh so majorly difficult task (because we all know how difficult it should be to save a file with a new extension) by pressing duplicate and then saving a copy of the file with a new extension. Yet then I had to delete the first copy and send it to trash. And of course then I have to secure empty trash because if I have to do this the rest of my mac's life I will be taking up a quarter of percentage of space with duplicate files. So this is the real reason they got rid of Save As: so that it would garble up some extra GB on the ole hard disk.
So about 20 minutes of my time were wasted while doing my homework and studying for an exam because I had to look up "how to save a file with a new extension in mac Lion" and then wasted time sitting here and ranting on this forum until someone over at Apple wakes up from their OSX-coma.
are you freaking kidding me Apple? I mean REALLY?!!!! who the heck designed this?!!! I want to know. I want his or her name and I want to sit down with them and have a long chat. and then I'd probably splash cold water on their face to wake them up.
I am starting to believe that Apple is Satan.

Mountain Lion won't install because it says my Mac HD cannot be used to start up my computer?

I've tried redownloading Mountain Lion but that didn't work. I've also gone into start up disc in my settings and restarted my computer with my Mac HD. It isn't partitioned. Any help here?

Just Follow this procedure...
1. Go To BOOT CAMP and create a BLANK PARTITION. Say a minimum of 10 GB. You do not have to install anything on this.
2. After you create this, go back to ML installer and now you will see 2 HD's. one will be your main HD and the second one will be the one you just created.
3. Install the ML OS X on the main hard drive. Once installed, reboot the machine go to DISK UTILITY and delete the blank partition you had created.
4. So, now you have your HD at its full capacity.
Try this it should work.

Mountain Lion won't boot after restart (SSD problem?)

Hey, I just installed ML on my OCZ Octane SSD, everything went ok, finally the setup assistant requested reboot which is what I did. However, it got stuck while rebooting and now I can only see flashing question mark icon and ML won't boot at all. The only thing I can do is to boot up in safe mode. I guess that the problem is my SSD (indilinx controller) which ML can't handle (it ran on Lion just fine). Does anyone have the same experience? Any clue how to resolve this? Thank you.

I've confirmed with OCZ that there is a firmware issue with Mountain Lion and they are working on a fix as of July 31, 2012.
No word from them yet, other than the official statement.
I too had an issue with my Octane booting once after install, then never booting again. Had to to a TM restore, back on Lion till this is resolved. Kind of frustrating, but there must have been a low level system change that affected things.
http://www.ocztechnologyforum.com/forum/showthread.php?103700-Mountain-Lion-and- OCZ-Octane-Petrol-and-Octane-S2-SSD-s

27" iMac Mountain Lion won't boot (Black screen) after switching to bootcamp

Hi,
I've been running Windows 7 in Boot Camp on Mountain Lion on my 1 month old 27" iMac without any problems. Tonight after I switched the startup partition to be boot camp the machine won't boot. I get the startup sound and the disks spin up, but the system just sits there with a Black Screen. There is no disk activity other than them spinning up.
I've tried starting the machine while holding the option key and also command-r, but nothing is happening. I have the feeling that the bluetooth keyboard has not had the chance to connect to the system before it is hanging.
I tried inserting a Lion OS DVD, thinking that it would at least complain and give me an option to boot back in to Mountain Lion. You can hear the DVD spin up and then go idle.
Any suggestions on how I can recover the situation?
Thanks in advance
Mick

The RAM mismatch might be the problem fix that.
Also backup/data recover naturally, assume TimeMacine or bootable clone is corrupted and backup only files to a storage drive
Most commonly used backup methods
Install OS X on a external drive and boot from it.
Create a data recovery/undelete external boot drive
Use Disk Utility on the booted clone to Erase with middle selection (Zero) the ENTIRE internal hard drive
Use Carbon Copy Cloner to reverse clone the clone onto the internal, copies the Recovery HD too.
That should fix it, or else the drive or another hardware issue
..Step by Step to fix your Mac
Install/upgrade RAM or storage drive in Mac's

Mountain Lion won't let my computer boot..

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