Can't install my Mountain Lion again on my Mac Pro -- help please.

I can't install Mountain Lion again on my Mac Pro: got this message: This copy of the Install OS X Mountain Lion application can't be verified. It may have been corrupted or tampered with during downloading. Delete this copy of the application, and go to apple store ...

Well, the hard disk has been replaced and the Apple people replaced but innstalled the older OS (
X Lion 10.7)! So I tried to reinstall the newer OS which from App Store under Purchases but I had the problem I stated earlier: This copy of the Install OS X Mountain Lion application can't be verified. It may have been corrupted or tampered with during downloading. Delete this copy of the application, and go to apple store ... Hopefully, I can get this fixed! thanks!

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I can't install OX mountain lion after download

I can't install OX mountain lion after download,the message says error of identity, delete the application and download again. My identity is ID apple, i dont understand, what i did wrong?

Shortly after starting the installation appears the message and not continuous, therefore I delete and return to lower it. At this time I'm going download again. After download it, I write to you again. Thanks.

Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).

Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).

Read
https://discussions.apple.com/message/15659267#15659267

Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).only have one disk to select and my partition map scheme is GUID partition

just bough OSX Mountain Lion, my laptop operating with v10.6.8. Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).only have one disk to select and my partition map scheme is GUID partition table. 24.44gb disk available.

Verify your computer can run Mountain Lion:
Upgrading to Mountain Lion
To upgrade to Mountain Lion you must have Snow Leopard 10.6.8 or Lion installed. Purchase and download Mountain Lion from the App Store. Sign in using your Apple ID. Mountain Lion is $19.99 plus tax. The file is quite large, over 4 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
     OS X Mountain Lion - System Requirements
       Macs that can be upgraded to OS X Mountain Lion
         1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
         7. Xserve (Early 2009) - Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
Open Disk Utility and verify the drive is partitioned using GUID and formatted Mac OS Extended, Journaled. If it is then do this:
Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
Now try installing Mountain Lion.

I've a macbook black middle 2007, can i install osx mountain lion?

I've a macbook black middle 2007, can i install osx mountain lion?

I'm afraid not > Apple - Upgrade your Mac to OS X Mountain Lion.
Must be a MacBook (Late 2008 Aluminum, or Early 2009 or newer)

Can i upgrade to mountain lion on a i mac late 2006 4gb 667 mhz dry

can i upgrade to mountain lion on a i mac late 2006 4gb 667 mhz dry

http://www.apple.com/osx/specs/

Is there any thing i can do to install mountain lion on my early mac pro

is there any thing i can do to be able to install mountain lion on my early mac pro

This is in no way official but you might like to have a look here:
http://forums.macrumors.com/showthread.php?t=1325709

If I have a MacBook Air, can I install a Mountain Lion VM on my PC?

I have recently purchased a MacBook Air with Mountain Lion installed on it. I would like to do some development back and forth from PC to Mac, and in some cases, it would be very convenient to do some work on my PC instead. Is it legal to install a Mountain Lion VM on my PC? If so, how can I do it using the Mountain Lion installed on my Mac?
Replies are greatly appreciated.

You can't install OS X Mountain Lion on a PC because Apple doesn't allow it. Also, you can't install it in a virtual machine in a PC because virtual machine apps for Windows doesn't support this.
However, you can run Mountain Lion on a virtual machine in your MacBook Air if you want. Parallels and VMware Fusion allows you to use Recovery HD in order to install Mountain Lion on a virtual machine, so you should consider the option

How can I install Windows7 -64BIT on a 1st Generation Mac Pro 2.66GHZ Quad?

Hi,
I posted this in Bootcamp but haven't received any replies so I am reposting it here where perhaps it really belongs.Is it possible to install Windows 7 64 bit on a 1st Generation Mac Pro 2.66Ghz?
Apple suggests that it's not possible and yet I've seen several Googled posts where the users have successfully installed 64 bit on a 1st Generation Mac Pro. The problem is that they've done this creating a bootable iso disk(whatever that is) using a Windows computer with imgburn and windows commands. I'm pretty good at following instructions but I haven't seen any instructions on how to install Windows 7 on this machine using a Mac based approach.
I'm using BootCamp and was able to partition the drive into NFTS and "proceed" with installation; however all the installations failed during setup and Windows would not boot; disk repair was not possible. Besides, from what I've gathered, 32 bit is problematic around memory issues.
When I try installing 64 bits, I never get past the "select cd rom 1 or 2" message where the keyboard won't work. It is at this point where others say they have successfully proceeded with moving forward by creating a bootable iso disk.
Problem is it's all Windows based with exe files and presupposes I already have Windows running.
I'm not sure I really understand how to create an iso disk, but I do have ROXIO TOAST 10 which is capable of burning "ISO" disks.Does anyone know how to do this and/or can you point me to a place where there are instructions on how to proceed?? While I realize Apple says that some mid 2006 mac pros aren't supported, there are multiple posts of windows 7 users successfully installing Windows 7 on a 1st Generation Mac Pro.
Thanks.
Mac Pro 2.66GHZ Quad Core

I have a March 2009 Mac Pro dual quad core running Win7 Pro 64 bit. I have Windows installed on a dedicated internal hard drive. There are no partitions, the entire drive is for Windows use.
Here's how I installed it, I did not start with BootCamp. Make sure the drive you're going to use for Windows doesn't have any important files on it because it will be formatted.
1. Update Snow Leopard
2. Place the Windows cd in the Super Drive
3. Shut down the computer
4. Remove all the hard drives except the one you want Windows installed on. Keep track of the order they are in and at the end replace them in the same order.
5. Boot the computer holding down the Option key
6. Boot to the Windows cd
7. Install Windows and format the drive to NTFS
8. When Windows needs to restart during installation you'll need to hold the Option key and boot to Windows, not the Windows cd.
9. After Windows installs, place your Snow Leopard disc in the Super Drive
10. The Drivers for Windows will be installed along with a Windows version of BootCamp.
11. Go to Start > All Programs > Apple Software Update
12. Update again until it's done.
13. You'll also find a BootCamp under Control Panel, check it out.
14. Shut down the computer and replace the hard drives in their original order
14. Now if you turn on the computer it will boot to Snow Leopard, but if you hold the Option key during boot you can select Windows or Mac.

How can I install osx mountain lion on one specific account on my laptop?

You see, in our laptop, we have 2 accounts. My account and my sister's. I really want to install mountain lion on my computer on the laptop but my sister doesnt want that on her account. How can I install mountain lion on my account only?

You can't.
Mountain Lion is the operating system of the computer - it isn't in the accounts, the accounts are in it.
The only way to achieve something like what you describe would be to parition the computer into two seperate drives and install a different operating system on each partition. That would also mean that changing accounts would require rebooting the computer and changing the startup partition / operating system / account. Which is unlikely to be what you want.
I think you and sister need to come to an agreement about which OS to use, be it ML or something earlier. What are her reasons for not wanting to switch? Perhaps you can convince her.

HT5568 Can't install this - Mountain Lion 10.8.2

I have a problem with this update !
I'm working on Mountain Lion 10.8.2 and when I will start the download I have this error : "... (NSURLErrorDomain erreur -3001).(102)"

Welcome to Apple Support Communities
Sometimes, the App Store version doesn't work correctly. If you can't install OS X 10.8.4 from the Mac App Store, install 10.8.4 with the Combo installer > http://support.apple.com/kb/DL1659

Installing another Mountain Lion copy on another Macbook pro?

Hi
Will I have any indiscrepancies if I sell my old Macbook Pro that I recently installed mountain lion on and buy another macbook pro (that is used and comes with Lion) and install Mountain Lion on that? I mean, will I have to buy it again if I use the same apple account I purchased ML on the one I'm selling?
thanks

When selling any Mac computer you must install the original OS that came on the system or any upgraded version of OS X that you physically have the Install DVDs for.
So if your Mac originally came with Leopard, then you bought a upgrade Snow Leopard DVD and installed that you can sell it with Snow Leopard installed AND SUPPLY to the buyer all of the original system discs and the Snow Leopard upgrade disc.
If it came with Snow Leopard Pre-Installed then you would need to reinstall Snow Leopard and supply those system discs with the sale.
If your system came with Lion Pre-Installed you have to revert it to Lion before you sell it. The Mt Lion upgrade that you did is TIED to YOUR Apple ID and can not be solded to anyone ever.
If you do not do that you are in violation of the terms of use and you are causing the buyer many headaches.

HT1338 Has anyone successfully installed Windows XP Mode and Windows Virtual PC software inside Windows 7 Pro inside Parallels 8 inside Mountain Lion running on a Mac Pro built in 2013?

I wanted to ask if anyone using a Mac Pro running Mountain Lion, Parallels 8, and Windows 7 Pro could run XP Mode?
My experience has not been encouraging in that I progress to the end of the final mile, that is configuring XP Mode for first use, then an error message appears saying I should try again, that is I should attempt to configure XP Mode again for the first time use. An endless loop, with no visibility into the nature of my configuration failure.
I understand my problem is a narrowly focused, microsoft-centric issue, however, I would imagine this XP behavioral Mode running inside Windows 7 Pro is a common goal for many users, so I thought this question was reasonable to ask our group.
Please advise, and thank you.

Hello FatMac,
I wanted to let you know that your "requires a patch" feedback looked--at first--like the piece of the puzzle I was missing. Turned out, however, when I downloaded the 64 bit version of the patch, then attempted to install it under Windows 7 Pro, my installation was first searched, then my patch installation returned a message saying this patch was not applicable to my system. (BTW:my Windows 7 install is 64 bit) This failure to install surprised me because, based on an earlier evaluation for hardware virturalization support, my MacPro does not have virturalization hardware support. I mean, based on this no hardware support feedback, and based on the nature of this patch, it looked as if the patch should install and set my problem right.
Nevertheless, the patch won't install, and I don't know a way to query or coerce it. I'm approaching the point of diminishing returns with this problem. I have two applications (Adobe Illustrator 10 and Framemaker 7.0) which will run, but they don't behave properly, under Windows 7. BTW: I did make somewhat extensive use of the Windows compatibility tool early on, but nevertheless, FrameMaker 7 simply quits at the worst possible moment, and Illustrator 10 graphics are very often blank black areas where pallettes should be.
Thanks again for your thoughts and help. I believed we were heading down the right track, but for reasons not visible to me, (the user), the patch that should fix this problem will not install...
If there is any saving grace to this situation, my problem is repeatable. I mean, it's not on-again/off-again. When I attempt to configure XP Mode for its first use, the progress bar turns red at the final second, then complains that it could not complete its setup. Please Try Again recouts its final advice. (Famous words marking the beginning of an endless loop:-)
Were it not for Illustrator and FrameMaker, I would not have taken us down this dark road.
So long for now, and hope to talk to you all again soon...

Can I upgrade to Mountain Lion with my 2008 MAcbook Pro?

I have a 2008 MAcbook pro 10.6.8 , 2,5 GHz Intel duel core, 4 GB MHz 17 Inch. It works fine but I am about to receive a new iPhone 5 and want to use iCloud. Is my computer compatible with doing this? ANd what will be different if I do? Will my computer be faster or slower or stay the same?? I also have a older version of Word for MAc (2008 or 2009) , I dont think it will work anymore if I upgrade. Thanks for your help!
d

You are using 10.6.8, so you can sync the iPhone 5 with your computer in this version. However, if you want to use iCloud, you have to upgrade. In this case, you can upgrade to Lion and Mountain Lion. OS X Mountain Lion needs a Mid/Late 2007 or newer MacBook Pro. Read > http://www.apple.com/osx/specs
First, open the App Store and purchase OS X Mountain Lion. While it's been downloaded, make a backup of your data with Time Machine or Carbon Copy Cloner, and check that your applications are compatible > http://www.roaringapps.com
When the download finishes, the OS X Mountain Lion installer will show up, so follow the steps to upgrade to Mountain Lion. After upgrading, open System Preferences > iCloud, and follow its steps to set up iCloud on your MacBook Pro.
Microsoft Office 2008 and 2011 works in Mountain Lion, but if you have 2008, you should update it to the most recent version before upgrading to OS X Mountain Lion

Can I use Mountain Lion with my 2008 Mac Pro

I have a Mac Pro with the following system:
Model Family:
Mac Pro
Processor:
2.66GHz Xeon (Dual-core 5150)
Manufacturer:
Intel
# of CPUs:
2
Codename:
Woodcrest
Base Memory:
1GB PC2-5300 DIMM
Max Memory:
32GB
# Memory Slots:
8
Brand:
Apple
Wireless:
Optional
Color(s):
Aluminum
Original OS:
Mac OS X 10.4.7
Graphics:
NVIDIA GeForce 7300 GT (256MB)
Base Storage:
250GB 7200RPM SATA 3.5"
Optical Drive:
6x DL Superdrive
Model Number:
A1186
Sales Number(s):
MA356LL/A
Machine Number(s):
MacPro1,1
Dimensions:
20.1 in x 8.1 in x 18.7 in
Weight:
42.4 lb
Production:
Aug 7, 2006 - Jan 8, 2008
Factory:
Ireland
Production Year:
2007
Production Week:
02 (January)
Production Number:
2775
I am currently using CS3 and desperately need to upgrade to CS6, CS6 needs 10.6.8 or 10.7.
Do you think its possible to get Mountain Lion working with this computer or am I much better off upgrading completely to a new Mac,
Really appreciate all help,
Davod

You have the original Mac Pro. Just look at your chart for the production line dats and when yours was produced. It is not an early 2008 Mac Pro.
http://www.everymac.com/systems/apple/mac_pro/specs/mac-pro-quad-2.66-specs.html
So no to ML. Snow Leopard and Lion yes.

Can't install my Mountain Lion again on my Mac Pro -- help please.

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