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Insert the USB flash drive into one of your Mac's USB ports.

Before proceeding, make a backup of the data on the flash drive, if any.

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The next series of steps will erase all data on the USB flash drive. We'll use this file in the next series of steps. When the process is finished, you'll find a copy of the InstallESD.dmg file on your Desktop. This can take a bit of time because the file is around 5.3 GB in size.

The InstallESD.dmg file will be copied to your Desktop.

Right-click or control-click on an empty area of the Desktop and select Paste Item from the pop-up menu.

Close the Finder window, and return to your Mac's Desktop.

Right-click or control-click the InstallESD.dmg file, and then select Copy "InstallESD.dmg" from the pop-up menu.

#Mavericks dmg to usb driver install

The Finder window will display the contents of the Install OS X Mavericks file.

Right-click or control-click the Install OS X Mavericks file and select Show Package Contents from the pop-up menu.

Look through your list of applications and locate the one named Install OS X Mavericks.

Open a Finder window and navigate to your Applications folder.

Since the installer image file is contained within the OS X Mavericks installer app, we must first extract the file and copy it to the Desktop, where we can then easily make use of it. This image file contains a bootable system and the files necessary to install OS X Mavericks. In order to create a bootable copy of the OS X Mavericks installer, you must locate the InstallESD.dmg file that's hidden in the OS X Mavericks installer you downloaded from the Mac App Store.

A USB flash drive that's at least 8 GB in size a larger flash drive is fine, too.

If needed, you can re-download OS X Mavericks

A valid copy of OS X Mavericks purchased and downloaded from the Mac App Store.

If you prefer to use an internal or external drive, the process is similar, and this guide should work just fine for you. You can also use an internal drive or partition if your Mac has more than one internal drive installed.įor this guide, we're going to concentrate on creating a bootable USB flash drive to hold the OS X Mavericks installer.

But you're not limited to these two options you can use any type of bootable media, including external drives connected via USB 2, USB 3, FireWire 400, FireWire 800, and Thunderbolt.

The two most common are probably USB flash drives and optical media (a dual-layer DVD). You can create the physical backup of Mavericks on a number of different types of media.

#Mavericks dmg to usb driver manual

The second way and the one we will take you through here is a manual method that uses the Finder and Disk Utility to create the bootable installer.

#Mavericks dmg to usb driver how to

You can find out more about this method in the guide How to Make a Bootable Flash Installer of OS X or macOS. It does work very well when a USB flash drive is a targeted destination. It's only real disadvantage is that it doesn't work directly to burn a bootable DVD. The first one makes use of Terminal and a hidden command that is deep within the Mavericks installer package that can create a bootable copy of the installer on any mounted bootable media such as a flash drive or external drive. There are two different methods that can be used to create a bootable Mavericks installer. Two Methods of Creating a Bootable Mavericks Installer If you would like to have a physical backup of the OS X Mavericks installer, our guide will show you how to create it. That's all well and good for many Mac users, and very convenient as well, but we like to have a physical copy of the installer, just in case we need to reinstall the OS or wish to install it on another Mac we own, without going through the download process again.

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With just a click or two, you can download and install the software from the online store.Īs with previous downloadable OS X installers, this one assumes that you're ready to go it launches the OS X Mavericks installation app as soon as the download is complete. This has several advantages, the biggest of which is almost immediate delivery. OS X Mavericks is the third version of OS X to be sold primarily as a download from the Mac App Store.