Weird Mountain Lion Error: Not Writing to Disk

I've been having a problem where my MBP running Mountain Lion.
Since updating to 10.8.2, my computer will randomly lose its the ability to read and write to disk. Files will not save, keychain access fails (asking me to reenter my passwords, which I won't do), and apps will not open (stuck bouncing on the dock).
Booting into safe mode and/or resetting PRAM appears to fix this, but it's happened three times already. Because I cannot save my documents, all data is lost. Disk Utility does not find any drive errors or permissions problems.

I still can't figure this out. It seems to happen after I have moved my computer from one location to another after putting my Mac to sleep. (Trouble waking from sleep? Different wifi signal?)
I thought rebooting helped, but one time, I restarted my computer in class (after experiencing this problem) and the applications still wouldn't save. I reset the PRAM, and it was fixed (for now). This has happened to three times already.
Reported my problem here. Hope Apple is listening.
http://www.apple.com/feedback/macosx.html
Did this start with 10.8.2 for you as well?

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2012 MacbookPro with Mountain Lion did NOT come with disk for drivers

I bought my Macbook Pro around Christmas time of 2012 and it had OS X Mountain Lion preinstalled on it. It did NOT come with a backup disk incase I needed to reinstall Mountain Lion on my computer. I want to install Bootcamp. How do I get the Mountain Lion drivers for my Mac? I have drivers for Windows, and I understand that I can put either of these drivers onto a usb or firewire, but how do I acquire the Mountain Lion disk/drivers in the first place?

You shouldn't need Mountain Lion drivers you will only need BootCamp that located in your Utilities folder. Take a look at this link, http://support.apple.com/kb/VI54
Also with Mac OS X 10.8 Mountain Lion equipped Macs, OS DVD no longer shipped with the units, because to reinstall the OS you will need to download the software via your recovery partition on your hard drive.

When attempting to install OS X Mountain Lion I get the following error message "We could not complete your purchase. OS X Mountain Lion is not compatible with this computer." Any idea what the issue might be?

When attempting to install OS X Mountain Lion I get the following error message "We could not complete your purchase. OS X Mountain Lion is not compatible with this computer." Any idea what the issue might be?

Mama --
Which Mac??????
iMac, MacBook Pro, Mini,, what?
Go up to the Apple icon on the upper left hand corner of your screen (menu bar).
Click that, and then "More Info". and then "More Info" again.
What does it say? Here's what mine says:

Trying to upgrade to Mountain Lion, error is message; " product distribution file could not be verified. It may be damaged or was not signed"

trying to upgrade to Mountain Lion, error message; " product distribution file could not be verified. It may be damaged or was not signed" ??
what to do? This is in App store. I followed the link e-mailed to me that an upgrade was available....... Puzzled.

Several causes for this problem have been reported. Please take each of the following steps that you haven't already tried. Stop when it's resolved.
Step 1
Back up all data.
From the menu bar, select
 ▹ System Preferences... ▹ Network
If the preference pane is locked, click the lock icon in the lower left corner and enter your password to unlock it. Then click the Advanced button and select the Proxies tab. If any proxy options are selected, make a note of them and then deselect them. You don’t need to change the bypass or FTP settings. Click OK and then Apply. Test. The result may be that you can't connect to any web server. Restore the previous settings if that happens.
Step 2
Rebuild the Spotlight index. If you try to search now from the magnifying-glass icon in the top right corner of the display, there will be an indication that indexing is in progress.
Step 3
Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

How I installed Mountain Lion on Un-repairable Hard Disk.

My Recommendations for Avoiding Trouble, Avoiding Risk, and Saving Time.
1) Make a boot clone first!!!
      http://www.bombich.com/
http://www.shirt-pocket.com/SuperDuper/SuperDuperDescription.html
2) Fix and repair your hard disk with Disk Utility and fsck_hfs before installing Mountain Lion!
    (Otherwise the installer will write-lock the disk preventing repair.)
Mountain Lion Aborted Installation—Claimed Hard Disk Failed, Couldn't be Repaired, and Should be Replaced
I have a 2011 MacBook Pro. Installation of Mountain Lion aborted claiming the hard disk could not be repaired by Disk Utility, should be backed up immediately, and replaced. It didn't make sense that the drive was booting up the computer for installation, but needed replacing. I removed the drive, put it in an external enclosure, and backed up the drive using a working Mac Mini, and Carbon Copy Cloner.
Hard Disk Was Write-Locked—Not Failing
Booting in Single User mode (hold command and S keys down while bootup is proceeding). I then typed in the fsck command given after Single User bootup. It informed me the drive was write-locked and read only. Now things were starting to make sense. Disk Utility couldn't repair the drive because it was write-locked! Maybe it could have been unlocked by the "chflags nouchg /Volumes/volume" or "chflags noschg /Volumes/volume" commands (http://hints.macworld.com/article.php?story=20031017061722471), but I didn't try it. Unlocking the drive is really worht a try because it could save hours of coppying through a slow USB interface.
I formatted my laptop drive after copying it to another large external drive. Then I used Carbon Copy Cloner to clone Snow Leopard from my Mac Mini to my freshly formatted original laptop drive. I unsellected the "Users" folder so I would only get the operating system—saving lots of hours copying data I don't need. Then I put the drive back in my laptop, and it booted with Snow Leopard. Checked the volume with Disk Utility and was informed the drive is fine. I removed the drive and connected it externally to my Mac Mini and ran fsck_hsf a few times in the terminal, which showed problems were found and fixed.
sudo fsck_hfs -fy /dev/rdisk1s2
Password:
** /dev/rdisk1s2 (NO WRITE)
   Executing fsck_hfs (version diskdev_cmds-491.6~3).
** Verifying volume when it is mounted with write access.
** Checking Journaled HFS Plus volume.
** Checking extents overflow file.
** Checking catalog file.
** Checking multi-linked files.
** Checking catalog hierarchy.
** Checking extended attributes file.
** Checking volume bitmap.
   Volume bitmap needs minor repair for under-allocation
** Checking volume information.
   Invalid volume file count
   (It should be 550614 instead of 550591)
   Invalid volume free block count
   (It should be 175459733 instead of 175460263)
** The volume MacBookPro HD was found corrupt and needs to be repaired.
3) sudo fsck_hfs /dev/rdisk1s2
Password:
** /dev/rdisk1s2 (NO WRITE)
   Executing fsck_hfs (version diskdev_cmds-491.6~3).
** Verifying volume when it is mounted with write access.
** Checking Journaled HFS Plus volume.
fsck_hfs: Volume is journaled. No checking performed.
fsck_hfs: Use the -f option to force checking.
[karl_ihrig] 4) sudo fsck_hfs -f /dev/rdisk1s2
** /dev/rdisk1s2 (NO WRITE)
   Executing fsck_hfs (version diskdev_cmds-491.6~3).
** Verifying volume when it is mounted with write access.
** Checking Journaled HFS Plus volume.
** Checking extents overflow file.
** Checking catalog file.
** Checking multi-linked files.
** Checking catalog hierarchy.
** Checking extended attributes file.
** Checking volume bitmap.
** Checking volume information.
** The volume MacBookPro HD appears to be OK.
5) sudo fsck_hfs -fy /dev/rdisk1s2
** /dev/rdisk1s2 (NO WRITE)
   Executing fsck_hfs (version diskdev_cmds-491.6~3).
** Verifying volume when it is mounted with write access.
** Checking Journaled HFS Plus volume.
** Checking extents overflow file.
** Checking catalog file.
** Checking multi-linked files.
** Checking catalog hierarchy.
** Checking extended attributes file.
** Checking volume bitmap.
** Checking volume information.
** The volume MacBookPro HD appears to be OK.
6) sudo fsck_hfs -fy /dev/disk1s2
** /dev/rdisk1s2 (NO WRITE)
   Executing fsck_hfs (version diskdev_cmds-491.6~3).
** Verifying volume when it is mounted with write access.
** Checking Journaled HFS Plus volume.
** Checking extents overflow file.
** Checking catalog file.
** Checking multi-linked files.
** Checking catalog hierarchy.
** Checking extended attributes file.
** Checking volume bitmap.
** Checking volume information.
** The volume MacBookPro HD appears to be OK.
I put the drive back in the laptop and repeated the fsck commands after a Single User boot. (Omited the sudo commands and used /dev/disk0s2.)
Downloaded and Successfully Installed Mountain Lion on "Unreparable" Drive
I downloaded the Mountan Lion installation application to my laptop, ran it, and had a smooth install.
More Trouble Migraiting My Applications and Directory
I expect to use up more time changing my computer name, migrating applications and rsyncing my User Directory. I will post how I achieve this.
I Hope People Avoid Trouble and Problems are Solved
I hope everyone will avoid trouble by making boot clone of their whole disk before attempting an install of ML and repairing their disk with Disk Utility and fsck before ML installer prevents it with a write-lock. Please see the first section.
I hope this solves other peoples problems with 'unreparable' disks. I believe this proves disks are repairable when ML says otherwise.
Good luck everyone!

troca, you certainly helped dtigerbme! Isn't that encouraging?
I recommend you copy your drive as soon as possible. I really don't think the drive is bad, but you may have to format it and copy back to it. Hopefully not. Clone or backup the drive before trying this recipe. Any time you have errors on a drive, back it up. A failing drive has lmited life. However, I don't think these drives are really failing, but that is my opinion and I break a lot of things.
Let's try this recepie for you:
Start in Single User Mode. Power on while holding the Command + S keys.
At the prompt, type "fsck_hfs -fy" or "fsck -fy" and hit return.
Do it again.
Enter the command "reboot".
Just googled "volume count disk utility" and got the same recipe to fix it.
http://counterjumper.com/post/19265700171/how-to-fix-invalid-volume-free-block-c ount-error-in
So my recipe is to try to fix the drive without taking it out of the computer, which requires you can boot it up.
troca it looks like Apple has said that error is benign and can be ignored in 2010.
http://support.apple.com/kb/TS2028?viewlocale=en_US&locale=en_U
I do believe fsck will fix it though.
Some other results from the same search:
http://forums.macrumors.com/showthread.php?t=1071850
https://discussions.apple.com/thread/3635034?start=0&tstart=0

Mail created w/ mountain Lion will not open in SL10.6.8, or OS X yosemite.

Mail created w/ mountain Lion will not open in SL10.6.8, or OS X yosemite. How can I convert it to open?

After a second call to AppleCare, they had advised me differently than before. Once they found out that my personal computer has Mac OS X Lion installed from the App Store, they suggested I simply upgrade my parents computer to Lion.
So, I used my download from the App Store and upgraded. It went smoothly, but Mail still will not open properly. And instead of the original error message, it comes up with this:
"Check with your developer to make sure Mail can work with your version of Mac OS X. You may need to reinstall the application. Check if there are any updates available for the application."
How can I re-install just Mail? A startup disk is not accessible for me right now. Can I download the latest version of Mail and install it from the Apple.com website?

"OSX Mountain Lion is not compatible with this computer."

I bought a MacBook Pro (13" retina display) today. Tried to update software. Error mesage said to ujpdate OS. When I tried to, error message said, "OS X Mountain Lion is not compatible with this computer." Anyone else had this problem? Any suggestions?

All owners of the model seem to have the same problem. Presently there is no 10.8.2 updater for your model. The previous updater has been pulled. Wait a while and one will show up when Apple gets it fixed.

Mountain Lion is not compatible with this computer

When will I be able to upgrade my Mac Pro to Mountain Lion:
2 x 3 GHz Quad-Core Intel Xeon, Memory 13gb 667 MHz DR2 FB-DIMM, 64GB free disk (system), 1TB free other disks, computer age mid 2007, Mac OS X Lion 10.7.5.
As of 11/28/12: Mountain Lion is not compatible with this computer.

I installed Windows 8 Pro on a PC, quickly shutdown and walked it over to my Mac Pro 1,1.
5365s are 8-core and Geekbench in the 8000 pts range.
An apple 2010 refurbished is $1800 also, old 4-core 2.8 but can upgrade easily to W3680 6-core 3.33
I agree running native beats running VM
The issue with getting Windows 64-bit onto 32-bit firmware is just the install phase but a real pain. 64-bit Windows requires, if the system is EFI based. I do have one PC that does use UEFI and Windows 8, another that does not. Both are 2008-9 motherboards (Intel which supports UEFI, and Gigabyte which did not with X58). Apple of course last updated our EFI 1,1 and 2,1 back in 2007. Before UEFI was done standardized etc.

Many of my System Preferences will no longer work after installing Mountain Lion. Software update, startup disk, iCloud, etc. no longer will launch. I keep getting a drop down window saying I must restart system preferences in order to use. No go!

Many of my System Preferences will no longer work after installing Mountain Lion. Software Update, Startup Disk, iCloud, Time Machine, Notifications, etc. no longer will launch even though they do show their icons in the system preferences window. I keep getting a drop down window saying I must restart system preferences in order to use with a "Cancel" or "OK" choice. After I click on "OK" the window just keeps reappearing with the same choices and the pane I wish to use still remains inoperative. Third party preference panes DO work.
Reinstalling OSX Mountain Lion did not help. Neither did throwing away preferences.plist.

Hi Jeff,
Tried to reply with my iPhone but not easy! Anyway, back on the laptop now. Yes the crash was bad but Tek support at Prism Sound was really good. In the end I rebuilt the whole system on a new disk which took a couple of days with all the plugins, softsynths etc.... but there seemed to be no alternative in my case, and this was agreed with Prism sound as being the only alternative left to me. I still don't really know what caused the crash but ML and Orpheus are both working fine now. Let's face it, you'll have to update at sometime..maybe best to pick some time between projects On balance, I suspect that my problems were unique to my system and that your installation will go ok.
Hope it goes well,
Rick

HT5022 I've downloaded AirPort Util 5.6, in order to manage my Gen 1 Airport Express. But when I go to mount, it says it can't be installed as version of OSX (latest Mountain Lion) is not supported. Feels like Im back using Windows...

I've downloaded AirPort Util 5.6, in order to manage my Gen 1 Airport Express - because Airport Util 6.0 won't recognise it.
But when I go to mount, it says Airport 5.6 it can't be installed as my version of OSX (latest Mountain Lion) is not supported/does not support on 5.6.
Super unhelpful error messages bringing back memories of using Windows...
Anyone sussed this, or have Apple just fazed out the original Airport Express hardware on the sly?

Generation 1 AirPort Express is Model No A1264. Check the side of your Express to look for the model number there. AirPort Utility in Mountain Lion will configure this model.
More likely, you have an older "b/g" version of the Express. Apple started the "Generation" thing with "n" capable devices. The Model number of your device is likely either A1084 or A1088. AirPort Utility in Mountain Lion no longer supports these older "b/g" devices.
If you have a Mac there running an earlier version of the operating system, you can use that to configure the Express.
Or, there is is workaround to install AirPort Utility 5,6 for Lion on Mountain Lion. See this article for details:
http://www.macworld.com/article/1167965/mountain_lion_and_the_ancient_airport_ba se_station.html

Just bought and downloaded Mountain Lion. Attempted installation: "This disk cannot be used to start up your computer." It's the only disk I have. Help!

Just bought and downloaded Mountain Lion. Attempted installation: "This disk cannot be used to start up your computer." It's the only disk I have. Help!

Model Name: iMac
Model Identifier: iMac7,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 4 GB
Bus Speed: 800 MHz
Boot ROM Version: IM71.007A.B03
SMC Version (system): 1.21f4
Serial Number (system): QP*****X89
ystem Version: Mac OS X 10.6.8 (10K549)
Kernel Version: Darwin 10.8.0
Boot Volume: Macintosh HD
Boot Mode: Normal
Computer Name: Stuart Gahona
User Name: Stuart Gahona (Stuart)
Secure Virtual Memory: Not Enabled
64-bit Kernel and Extensions: No
Time since boot: 48 minutes
<Edited by Host>

OSX Mountain Lion says not compatible when it is. Advice please.

Hi.
i am running OSX Lion 10.7.5 and waht to upgrade to mountain lion.
i purchased this on my macbook via the app store and it downloaded no problem but when i go to download it on my mac pro tower its says the following....
"We could not complete your purchase. OS X Mountain Lion is not compatible with this computer."
my house mate installed it on his mac pro and his is an older version than mine, i think mine is a 2009 model.
Model Name:          Mac Pro
Model Identifier:          MacPro1,1
Processor Name:          Dual-Core Intel Xeon
Processor Speed:          2.66 GHz
Number of Processors:          2
Total Number of Cores:          4
L2 Cache (per Processor):          4 MB
Memory:          5 GB
Bus Speed:          1.33 GHz
so i am looking for advice on how to fix this so i can upgrade to mountain lion....
i hope some one can help soon
Dan.

boomboom1980 wrote:
i produce music so like to upgrade all the time as eventually people stop upgrading the drivers....
i think mine is a 2009 model.
Model Name:          Mac Pro
Model Identifier:          MacPro1,1
Processor Name:          Dual-Core Intel Xeon
Processor Speed:          2.66 GHz
Number of Processors:          2
Total Number of Cores:          4
L2 Cache (per Processor):          4 MB
Memory:          5 GB
Bus Speed:          1.33 GHz
MacPro 1.1 is a 2006 Model

How can i update my old 2006 iMac Intel core 2 duo running 10.6.8 to OSX Lion so that I can sync using iCloud with my newer devices? Mountain Lion is not an option for my older model and Lion is no longer available at App store.

How can i update my old 2006 iMac Intel core 2 duo running 10.6.8 to OSX Lion so that I can sync using iCloud with my newer devices? Mountain Lion is not an option for my older model and Lion is no longer available at App store.

Call Apple's online store's telesales agents: 1-800-MY-APPLE (1-800-692-7753) or Customer Service and Sales Support at 1-800-676-2775. For Lion you'll get a redemptions code via e-mail and need to DL from the Mac Apple Store (requires SL 10.6.6+).

I sent my 17inch mac pro to apple to install a new hard drive and my mountain lion was not on it when i got it back, using the same apple id i tried to re download it but it says i have to pay

i sent my 17inch mac pro to apple to install a new hard drive and my mountain lion was not on it when i got it back, using the same apple id i tried to re download it but it says i have to pay

never mind i got it by going into my account and veiwing hidden items and there it was

How to configure Mail app on mountain lion to not download all my emails in hotmail server. I need only just 1-2 weeks

How to configure Mail app on mountain lion to not download all my emails in hotmail server. I need only just 1-2 weeks

Try going to the web based site and see if you can set up a temporary folder there. Move anything you don't want to download to that folder.

Weird Mountain Lion Error: Not Writing to Disk

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