How to install the OS on iMac 2009

I have older iMac 27 "2009 and I want to format the drive and reinstall the OS, but I don't have the installation diskettes anymore.

I tried to restart and hold down the command-R and it does not work I don't think his support on the older operating system.

Can anyone tell my way I have reinstall the OS and what operating system to acquire? What I have to buy a disc, or can I download it?

The most important I need to know is which OS would better suit my iMac.

Thanks in advance!

my machine specifications are:

-OS X 10.6.8

-Intel Core 2 Duo processor clocked at 3.06 Ghz

-4 GB of DDR3 RAM

-Model identifier: iMac 10.1

-1 2 CPU cores

-L2 Cache: 3 MB

-Bus speed: 1.07 GHz

-Version of boot ROM: IM101.00CC.B00

-SMC Version (System): 1.53f13

Upgrade to Snow Leopard

You can buy Snow Leopard at the Apple Store: Mac OS X 10.6 Snow Leopard - Apple Store (US). The price is $ 19.99 plus tax. You will receive a physical media by mail after placing your order.

After the installation of Snow Leopard you will need to download and install the Mac OS X 10.6.8 Combo Update v1.1 update Snow Leopard 10.6.8 and give you access to the App Store. Access to the App Store lets you download Mavericks if your computer meets the requirements.

     General requirements for Snow Leopard

1. equipped mac to an Intel processor

2. the 1 GB memory

3. 5 GB of available disk space

4. DVD drive for installation

5. some features require a compatible Internet service provider;

charges may apply.

6. some features require Apple iCloud services; fees and

conditions apply.

Clean Install of Snow Leopard

Make sure that you have backed up your files because the following procedure will remove all of the hard drive.

1. start the computer using the Snow Leopard installation disc or disc 1 that came

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

After the ring, press and hold the C"" key.  Release the button when you see

a small gear appear under the dark gray Apple logo.

2. once the load setup program select your language and click continue

button. When the menu bar appears select utility drive in the Utilities menu.

After charge OF select hard drive entry in the list on the left (mfgr. ID and drive

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

partitions to one (1) from the Partitions of the dropdown menu, click on the Options button

GUID, click OK, and then select define the Mac OS Extended format type

(Logged, if supported), and then click the apply button.

3. when formatting is complete FROM and return to the installer.  Move forward

with the installation of OS X and follow the instructions included with the installer.

4. Once installation is complete your computer will restart in the Setup

Assistant. After finishing Setup Wizard will complete the installation, after which

you will use a new installation of Mac OS X.  You can now begin the process of updating

at the opening of updated software and installing all recommend updates to bring your

current installation.

5. If you plan to sell or to give to your remote computer, then proceed as follows:

Once you reformat your hard disk and reinstall OS X, the computer restarts with a

Screen of welcome and you prompt to choose a country or region. If you want to leave

the Mac in an out-of-box state, do not continue with the configuration of your system. Instead,.

Press command-Q to stop the Mac. When the new owner turns on the Mac,

the Setup Wizard will guide them through the configuration process.

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

Tags: Mac OS & System Software

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