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Posted February 28, 2011 by Jimmy S in Apple Mac, Mac OS X Leopard, Mac system administration

Oct 24, 2011 This recipe will explain how to make a USB Thumb Drive bootable with the OS X Lion Developer Preview installer on it and in turn allow you to install Lion on a Mac without an optical drive (ie Macbook Air line). We will need a copy of the installer dmg (not provided) and a 4GB.

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This recipe will explain how to make a USB Thumb Drive bootable with the OS X Lion Developer Preview installer on it and in turn allow you to install Lion on a Mac without an optical drive (ie Macbook Air line). We will need a copy of the installer dmg (not provided) and a 4GB USB Thumbdrive or Memorycard Reader w/memory card and a Mac to convert the dmg to a bootable usb thumb drive.

Requirements:

• – OS X Lion installation DMG (hint: file named: mac_os_x_10_7_11a390.dmg)
• – Mac running OS X Leopard or Snow Leopard
• – USB Thumbdrive or Memorycard Reader w/memory card (4GB mininum, data will be destroyed).

This guide lets you restore the .dmg installer file for OS X Lion onto a usb thumbdrive. We can then boot the USB Drive on our Mac to install OS X Lion from it. This is very handy for us Macbook Air users that do not have an external optical drive.

Guide:

1. On your Mac, open up Disk Utility. Click on the USB Drive on the left.

2. On the right pane, go to the Restore tab.

3. Click on the Browse button and locate the .dmg installer for OS X Lion. (ie mac_os_x_10_7_11a390.dmg)

4. Once you have it chosen, click and drag your USB Thumbdrive from the left pane to the Destination box. (ie THUMBDRIVE in the screenshot) and then click Restore

I recommend erasing the destination, so be sure to backup any data on the thumbdrive prior to this step! This will take a few minutes to do. Once its finished, you now have a bootable OS X Lion install thumbdrive (basically just like what the Macbook Air ships with).

5. Hold Option/Alt after your see the Apple logo appear and boot with the thumbdrive in your Mac.

Choose the USB Drive to install OS X Lion from your USB Thumbdrive!

• – I would recommend creating a separate partition for your OS X Lion installation as well.

NOTES:

– I have confirmed this working on a Macbook Air 11″, 2010, 1.6Ghz version.

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Os X Mountain Lion 10.8 Download

Get the latest 10.8.5 OS X Mountain Lion the newest version of the world’s most advanced desktop operating system. It has over 200 new features that update the Mac and make it the best computer there is. Use the new Messaging app to write and send photos, videos, contacts, links and documents to anyone using another Mac, iPhone, iPad or iPod touch.

OS X Mountain Lion 10 DMG enables you to start a conversation on one device and continue on another. Send to all files, web pages, photos, videos and tweets with the new Share button, directly from the app you are using. Create to-do lists and alerts that will appear in the new Notification Center, with the Reminder app. Take notes of all your ideas with Notes, and write aloud with the Dictation feature.

Download OS X Mountain Lion Mac and enjoy the most useful operating system for mac users. And if you want to have fun, challenge friends who have a Mac or an iOS device in fantastic games on the Mac with Game Center. And in addition iCloud is standard: so keep up to date on all your mail devices, contacts, calendars, reminders, notes, to-do lists, music, photos, iWork documents, PDF and much more is really easy.

OS X Mountain Lion 10 DMG Features:

Messages
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• With iMessage you can start a conversation on your Mac and continue it on your iPhone or iPad.
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Safari
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• Pinch to view panels with the panel view and scroll to switch between them.
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Notification center
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• Open Notification Center from anywhere in OS X to see the latest notifications.
• Configure your notifications to receive only the ones you want.

Sharing
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• Share with Mail, Messages and AirDrop.
• Log in to Twitter, Flickr and Vimeo once, and then start sharing.
• Tweet directly from your apps.

Game Center
• Play live multiplayer and turn-based matches against your friends on iPhone, iPad, iPod touch or Mac.
• Log in to the Game Center app to see friends on your gaming network.
• Check the rankings and results.
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Key features of Mountain Lion DMG:

• Dictation allows you to speak instead of writing: there is no need for training or configuration.
• AirPlay Mirroring shows the screen of your Mac on an HD TV via Apple TV.
• Power Nap keeps your Mac up to date while you’re sleeping, so it’s ready to go.
• With Gatekeeper downloading apps from the internet is safer because it allows you to control which apps can be installed on your Mac.

Mac Os X Mountain Lion Dmg To Usb Converter

What’s new in Mac OS X Mountain Lion 10.8.5 ?

Os X Mountain Lion Download

The 10.8.5 update improves the stability, compatibility and security of your Mac. This update:

• Resolves an issue that may prevent Mail from viewing messages.
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• Resolves an issue that may prevent the screen saver from starting automatically.
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System requirements:

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How To Make Bootable Usb For Mac Os X Mountain Lion

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