If you don't get a startup chime then you may have a worse problem. Just be prepared.

Find the Mountain Lion installer on your Mac. It’s called Install OS X Mountain Lion.app and it should have been downloaded to your main Applications folder (/Applications).

Answer (1 of 3): I am facing the same dilemma right now. I think I had a copy of the installer, but it is in my old Macbook that won’t boot up. Worst thing is that it was also an old account on told old computer, and my current account doesn’t have it in the App Store and I have no clue of my log. Install OS X Mountain Lion On Any Computer Including AMD CPUs. For detail Installation Guide and Instruction read: Install Hackintosh Mountain Lion on PC/Laptop. Hackintosh Mountain Lion supports AMD and Intel Atom Hackintosh Mountain Lion is distributed as an ISO file Hackintosh Mountain Lion works with regular DVDs There are two versions. To create an Apple Mountain Lion bootable USB Installation you will need PowerISO and an Apple OS X installation in ISO format. Download And install PowerISO; Create a Mountain Lion bootable USB installation. Open PowerISO and continue unregistered. Click on the Tools Menu and select “Create Bootable USB Drive” Select Source image file.

What year is your MBP? From 2011 onward you would use Internet Recovery. Earlier you would need to install the original software that came with the computer on software restore DVDs.

Internet Recovery

Install Mavericks, Lion/Mountain Lion Using Internet Recovery

Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.

Boot to the Internet Recovery HD:

New Hard Drive Os Install

Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.

Partition and Format the hard drive:

1. Select Disk Utility from the main menu and click on the Continue button.

2. After DU loads select your newly installed hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.

3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed. Quit DU and return to the main menu.

Reinstall Lion/Mountain Lion. Mavericks: Select Reinstall Lion/Mountain Lion, Mavericks and click on the Install button. Be sure to select the correct drive to use if you have more than one.

Note: You will need an active Internet connection. I suggest using Ethernet

if possiblebecause it is three times faster than wireless.

This should restore the version of OS X originally pre-installed on the computer.

DVD Installation:

Os X Mountain Lion 10.8.4

Clean Install of Snow Leopard

Be sure to make a backup first because the following procedure will erase

the drive and everything on it.

1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came

with your computer. Insert the disc into the optical drive and restart the computer.

After the chime press and hold down the 'C' key. Release the key when you see

a small spinning gear appear below the dark gray Apple logo.

2. 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 the hard drive entry from the left side list (mfgr.'s ID and drive

size.) Click on the Partition tab in the DU main window. Set the number of

partitions to one (1) from the Partitions drop down menu, click on Options button

and select GUID, click on OK, then set the format type to MacOS Extended

(Journaled, if supported), then click on the Apply button.

3. When the formatting has completed quit DU and return to the installer. Proceed

with the OS X installation and follow the directions included with the installer.

4. When the installation has completed your computer will Restart into the Setup

Assistant. Be sure you configure your initial admin account with the exact same

username and password that you used on your old drive. After you finish Setup

Assistant will complete the installation after which you will be running a fresh

install of OS X. You can now begin the update process by opening Software

Update and installing all recommended updates to bring your installation current.

Installing Mac Os On Hdd

Mac External Hard Drive On Windows 10

Download and install Mac OS X 10.6.8 Update Combo v1.1.

Mac Os X Mountain Lion Install Esd Download

Create an Apple OS X 10.8 Mountain Lion Bootable USB installation from Windows 7 using PowerISO Application.

Mac Os X Mountain Lion Installer Download Pc

To create an Apple Mountain Lion bootable USB Installation you will need PowerISO and an Apple OS X installation in ISO format.

Mac Os X Mountain Lion Installer Download Windows 10

• Download And install PowerISO

• Open PowerISO and continue unregistered.
• Click on the Tools Menu and select “Create Bootable USB Drive”
  
• Select Source image file – OS X ISO
• Select Destination USB Drive
• Write method will change automatically to “Write RAW Image File to USB Drive”
  
• Click Start and wait for your USB Drive to become ready

All Done.

Mac Os X Mountain Lion Install Dvd Download

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