How To Install Os Lion On Mac

So you’re all excited to upgrade to the latest Mac OS X 10.7 Lion only to know that installing Lion is possible only when you have Snow Leopard pre-installed? It’s true that Mac App Store only works on 10.6.6 or above version of Mac OS. However, that doesn’t mean you can’t install the Lion without Snow Leopard. You can. Mopar engine paint p4349217. I have.

To be able to install Mac OS X 10.7 Lion on your machine, all you need is the Lion installation file which you can grab from the Mac App Store. Online file transfer software free download. So, if you know someone who has already purchased Lion, ask him to get the file for you. Read this.

Installing Mac OS X 10.7 Lion on my iMac.

So by following this guide, you can install Mac OS X Lion on your hackintosh using only a USB thumb drive. The guide is called UniBeast.Follow this guide, and you’ll be able to do a clean-install of Mac OS X Lion on your hackintosh, or upgrade your existing Snow Leopard installation (that’s your personal preference).

This Mac originally shipped with Snow Leopard install discs, which you do not have. It did not originally ship with Lion, so there may be some issue there which is keeping you from completing the installation of Lion using Internet Recovery since Internet Recovery is intended to install the OS the Mac originally shipped with. Are you wanting to.
Also, OS X Mountain Lion takes up about 10 GB of space on its initial installation, so the computer where you install Mac OS X must have at least 10 GB of space in its hard drive. However, that's only the bare minimum; if you plan to install Mac OS.

Before we dig into how to install Mac OS X Lion on your machine, make sure you follow these steps:

Backup. Needless to say, this is important. You can use Time Machine, or clone the backup and transfer the data to external Hard Disk.

Have a copy of Mac OS X Lion. When you are downloading Mac OS X 10.7 Lion off the Mac App Store, make sure to copy the installer file and save it where it is easy to find — remember that one can always have multiple copies of Mac OS X Lion installed.

Lastly, although optional, replace your keyboard, mouse with new batteries, or recharge the batteries. I have been put in a stage where my Mouse batteries where at 8% during installation of Lion and the frequent disconnection left me with nothing but frustration. Luckily, I had an extra USB mouse going along for the ride.

Assuming that you have already followed the above steps, here’s what you need to do for installing Mac OS X Lion without Snow Leopard:

— Boot into the Operating System — Mac OS X Tiger, Leopard, Snow Leopard, whatever. Now, open Finder.

— You’ll find a folder named “System.” Click on this folder where you’ll have to navigate to the “Library” folder as shown:

— Clicking on the Library folder will result in many other sub-folders. Reach out for the folder named “CoreServices.”

— Search for the file “Systemversion.plist” inside the CoreServices folder. Click on it and open using any text-editor. I’ve used Text Wrangler to open this file. And while you’re at it, why don’t you backup this file, just in case if you’ve done it wrong!

— Now that you have opened the file, change the number to 10.6.6 or above as shown. For instance, you can replace 10.4 (for Mac OS X Tiger) to 10.8 — which is the latest Snow Leopard update. I’ve changed from Mac 10.6.4 to 10.7 version. Once you have changed the number, save the file and exit.

— Restart your Mac.

— You can now install and upgrade to the new Mac OS X Lion file by launching the installesd.dmg file!

If you have any questions, feel free to let me know. Midi keyboard software windows 10.

Apple Mac OS X Lion is now available to general public. Apple os 10 8 download. The Mac OS X 10.7 Lion is available for installation only from the Mac App Store. This guide will teach you how to create a bootable USB Flash drive of Mac OS X Lion 10.7 and install Lion from USB, rather than downloading it from Mac App Store on each and every Mac computer you own.

Despite of numerous great and awesome features, Mac OSX Lion 10.7 has a big flaw that it is not available in bootable USB or DVD right now. Every time you you want to install OSX Lion on a Mac you will need to download it from Mac App Store all over again. Thanks to the bootable USB method which eliminates the downloading of Mac OS X Lion for each and every device and lets you install Mac OS X Lion on any Mac.

Note: An official bootable USB of Mac OSX ion 10.7 will be available in August 2011 for $69. This method not only eliminates the wait for the official, it also saves you $40 (Mac App Store version costs $29).

Creating a bootable Mac OS X Lion 10.7 USB Flash drives requires medium level Mac knowledge, however, by following these simple instructions even a beginner should be able to install Mac OS X Lion via USB Flash Drive.

Apfs format mac. Why make a bootable Lion USB drive?

You can perform a clean OS X Lion installation with the bootable USB drive
The bootable Lion USB drive becomes a recovery disk with Disk Utility access, access to Time Machine backups, re-installation, and all other Recovery HD partition features
You will have external media to recover and reinstall Lion in the event of total drive failure or some other catastrophe

Required Stuff

Purchase and Download Mac OS X Lion from the App Store
4GB USB Flash drive (8GB recommended)

If you have arranged the above mentioned items, simply follow the detailed guide below to create a bootable Mac OS X Lion 10.7 USB Flash Drive…

Step 1 – Locate the Lion InstallESD.dmg file

How To Install Os X Lion On Mac

Once the Lion downloading is complete, go to the Applications folder and find the Install Mac OS X Lion.app file you just downloaded;
Right click on the Install Mac OS X Lion.app file and select Show Package Contents;

Now go to Contents > SharedSupport Does sims work on mac. directory. Locate the file named: InstallESD.dmg and copy it on your desktop.

Step 2 – Format The USB

Before formatting, If you have any data on your USB drive then save it;
Plug the USB flash drive into your Mac;
Launch Disk Utility from Applications;
Select the plugged USB from the Left pane on the Disk Utility and click on Partition tab;
Select 1 Partition from the Volume Scheme dropdown menu;
Input a name for the USB and Choose Mac OS Extended (Journaled);
Now click on Options button at the bottom. Select GUID Partition Table and click OK. Now click on Apply at the bottom right to start formatting.

Bootable Os X Lion Download

Step 3 – Make Mac OS X Lion Bootable USB

Double-click on InstallESD.dmg (that you copied onto your Mac desktop) to mount the Lion disk image (mounted InstallESD.dmg should appear on Disk Utility application and desktop);
Select the plugged USB from the Left pane on the Disk Utility and then go to Restore tab;
Click and drag the IMac OS X Install ESD from the left pane and drop it in the Source field;
Then Click and Drag the USB drive from the left pane and drop it in the Destination field;
Make sure you have chosen the right USB drive, you don’t want to format the wrong drive and then click on Restore button;
This will restore the Lion 10.7 image to the USB Flash drive. Wait for the process to complete.

Step 4 – Boot Mac OS X Lion from USB

Reboot your Mac with the USB drive plugged in.
Hold down the alt/Option key on your keyboard when you hear the OS X start-up sound.
Choose the USB Flash Drive from there to boot.
Now follow the on screen instructions to install OS X Lion.

How do i open my external hard drive on mac. You can follow the Step 4 to install Lion on other Macs with the bootable USB you just created.

[via Lifehacker]