Feb 17, 2012 If you already have the Mac OS X Mountain Lion install DMG extracted, skip this first set of steps and jump directly to making the bootable drive below. Download OS X Mountain Lion and Extract the DMG File. Download OS X 10.8 Mountain Lion from the App Store; Go to the /Applications/ directory and right-click on “Install Mac OS X Mountain Lion.app” selecting “Show Package Contents” Open the “Contents” directory and then open “SharedSupport”, looking for a file named. Jul 25, 2012 Use the copy you make to create a bootable disk or follow this process before you install Mountain Lion on the Mac you’re currently using. What You’ll Need: blank 8GB+ USB/external drive. INSTRUCTION Run, DiskMaker X, then.choose El Capitan (10.11). Next, choose Use another Copy. Double click on El Capitan.DMG to mount it, then borrow the El Capitan.app OS X El Capitan DMG.png. Choose An 8GB USB thumb drive. Select the USB volume name, then select Choose this disk. Nov 15, 2018 Method 3: Create macOS Bootable USB Drive on Windows; Method 1: How to Create Bootable USB Installer for Mac via Commands. MacOS (formly named Mac OS X) is just a variant of popular Unix based operating system. This means a lot of daily and advanced tasks on Mac can be done via text commands such as creating bootable USB installer for Mac.
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Posted February 28, 2011 by Jimmy S in Apple Mac, Mac OS X Leopard, Mac system administration
Last Updated on
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).
How To Make Bootable Dmg Mac Os X Lion
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
How To Make Bootable Dmg Mac Os X El Capitan
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!
How To Make Bootable Dmg Mac Os X 10 11
- – 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.
About Jimmy S
Jimmy Selix is an early adopter that loves to be one of the first on the block to have the latest and greatest in technology and gadgets. Another love of his is being able to share his knowledge to others seeking it. Feel free to drop any comments or questions that you may have.
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How To Make Bootable Dmg Mac Os X 7
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