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Model A1174 with 2 GHz Core Duo or Model A1207 with 2.16 or 2.33 GHz Core 2 Duo

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How to do a fresh install of macos Lion?

Hi guys,

i bought recently an imac a1207 that has no os on it, when i boot I’m on the screen of utility with different option (reinstall lion, wipe hard drive,assistance…) i did some research on the internet and i saw that it’s kinda complicated to do an install, so it would be super if someone can help me with a step by step using usb installer. Also, i saw that the update from snow leopard to lion is free, so maybe, i can install snow leopard then lion. Thanks for your help :)

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Do you have another Mac?


@andrewsawesome i have one on El capitan and another on Catalina


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Ok so i successfully installed lion with a usb. I wrote on a usb the install.dmg onto another usb then i put it in the mac, pressed alt and booted on the usb. Then clicked reinstall lion and it worked !

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Using your El Capitan based system you’ll need to create a bootable OS installer CD/DVD disk for your A1174/A1207 system. This series if I remember correctly won’t boot from a USB drive. It requires either a bootable CD/DVD or a bootable FireWire drive.

Download the Lion installer directly from Apple from here: Mac OS-X Lion Installer

First run it to install the OS onto the re-writable CD/DVD your system can support so its bootable and then copy over the installer to the CD/DVD following this guide Create a Bootable DVD Copy of OS X Lion Installer. Then use it to boot up your A1174/A1207 system.

References: Apple finally makes OS X Lion and Mountain Lion free to download

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The installer on Apple website can be launched on el capitan ? Because it didn’t work on the one on Catalina because i tried the other day.


@anthony10006 - Did you follow guide I posted? Create a Bootable DVD Copy of OS X Lion Installer. There is a process you need to follow.

You can't directly launch the installer.


Ok, i’m home this week-end. Also, i didn’t say that if i go in reinstall mac os lion, and i type my apple id, the computer is saying : « this item is temporary unavailable »@danj


@anthony10006 - I have no problem getting to it, the download starts up just fine.


Hello, i searched everywhere but i can’t find a dvd ? :( so is it possible with a usb key ? I downloaded lion and i have installESD.dmg on elcapitan as the tutorial said


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Correia sarà eternamente grato.
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