How To Make Bootable Usb From Osx Dmg

  1. Make Bootable Usb From Mac Dmg In Windows
  2. Make Bootable Usb Windows 10
FonePaw - Solution - Upgrade - Create A Bootable USB Drive for Mac OS

To install macOS or OS X from USB, you need to create a bootable install USB drive for Mac operating system. This tutorial will introduce you three ways to create bootable USB drive for macOS High Sierra, macOS Sierra, Mac OS X El Capitan, Yosemite, Mavericks and more.

Use 'createinstallmedia' Command in Terminal

DiskMaker X has been around a while and is currently the simplest, visually friendly method of creating a boot flash drive for OS X. OS X El Capitan Compatible Macs If you’re interested in creating a bootable USB flash drive containing Apple’s OS X El Capitan then it’s logical to assume that it’s because you ultimately want to install a fresh copy of the platform onto one of your Mac computers. Launch Disk Utility (in /Applications/Utilities) and then drag BaseSystem.dmg (in the OS X Install ESD volume) into Disk Utility’s left-hand sidebar. Select BaseSystem.dmg in Disk Utility’s. Choose An 8GB USB thumb drive. Select the USB volume name, then select Choose this disk. Click on Erease to format the USB and create the disk. Click Continue, you then are asked for admin and password. Wait for a while until the process is finished completely. METHOD 2: Use Terminal. If you wish to use this method, you can follow our guide on how to make a bootable copy USB flash drive of the OS X Yosemite Installer, and no, that's not a typo. The older process outlined in the Yosemite document will work for El Capitan; you need only be aware of file name changes, such as El Capitan instead of Yosemite in the instructions.

The most recommendable way to create a bootable install USB drive for Mac OS is using 'createinstallmedia' Command with Terminal application.

Step 1: Download macOS or OS X

The first thing to do is to download the Mac operating system that you need. To install the latest Mac OS, for example, macOS High Sierra, you can search and download the installer from App Store.

How To Make Bootable Usb From Osx Dmg

To download the older Mac OS X version, you can go to App Store > Purchases to download the Mac OS X El Capitan, Yosemite, Mavericks that has been previously downloaded.

However, Apple has decided that macOS Sierra and later will no longer be listed in Mac App Store's Purchased. To download the installer of macOS Sierra, go to Apple Support.

Note: After downloading the Mac OS installer, do not install the OS but quit the installer.

Step 2 Get A USB Drive with Sufficient Storage

You should have a USB drive with at least 8 GB of storage and insert the USB drive into your Mac. If you need to create a bootable USB drive of macOS High Sierra, 16 GB USB flash drive is suggested. In fact, USB drives with larger storage, like 32 GB to 64 GB, tend to show better performance.

IMPORTANT: The contents of the drive will be erased after creating a bootable installer drive. Therefore, make sure there is nothing important on your flash drive before you continue with the following steps.

Step 3 Check the Name of Your Flash Drive

The following command is to create a bootable copy of Mac OS installer on a USB drive named FlashInstaller. If your USB drive has a different name, replace FlashInstaller in the command with the name of your USB drive. If you don't want to modify the command, change the name of your flash drive into FlashInstaller.

Step 4 Create A Bootable USB Drive of macOS/OS X

Launch Terminal enter the following command according to the version of Mac operating system that you are dealing with.

macOS High Sierra Installer

sudo /Applications/Install macOS High --volume /Volumes/FlashInstaller --applicationpath /Applications/Install macOS High --nointeraction

macOS Sierra Installer

sudo /Applications/Install macOS --volume /Volumes/FlashInstaller --applicationpath /Applications/Install macOS --nointeraction

OS X El Capitan Installer

sudo /Applications/Install OS X El --volume /Volumes/FlashInstaller --applicationpath /Applications/Install OS X El –nointeraction

OS X Yosemite Installer

sudo /Applications/Install OS X --volume /Volumes/FlashInstaller --applicationpath /Applications/Install OS X –nointeraction

OS X Mavericks Installer

sudo /Applications/Install OS X --volume /Volumes/FlashInstaller --applicationpath /Applications/Install OS X –nointeraction

Tip: If you didn't download the installer from Mac App Store, you must modify the file path after 'applicationpath'.

After pasting the command on the Terminal, hit Enter key. You'll be asked to enter your Mac's password. Enter the password and hit Enter.

Then you need to check the name and path of your USB drive. If it is correct, press 'y' then hit 'Enter'. The Mac will begin to create a bootable install drive for macOS High Sierra, macOS Sierra, Mac OS X El Capitan/Yosemite/Mavericks. When it is done, Terminal will shows 'Done'.

To install macOS or OS X from the USB flash drive, check how to clean install Mac OS from USB.

Make A Bootable Installer for macOS via DiskMaker X or Install Disk Creator

If you think it is too much trouble to use Terminal to make a bootable installer on a USB drive, you can use tools like DiskMaker X, Install Disk Creator. Both the tools can make an install drive for macOS Sierra, OS X El Capitan, OS X Yosemite and more.

DiskMaker X: When you launch the application, it will try to find the downloaded macOS or OS X installers program on your Mac. And you just need to follow its on-screen instructions to create a bootable USB drive by clicking a few buttons.

Install Disk Creator: Once you run the application, select a USB drive, choose a Mac OS installer, and click Create Installer to begin to create an install USB drive.

Disk Utility to Create a Bootable macOS/OS X Installer

Before using createinstallmedia command, people used to use Disk Utility to create a bootable installer drive manually. But the process is much more complicated than the Terminal method. So Apple also suggests you make a bootable install drive via Terminal.

Just in case that you don't want to use Terminal, you may follow these steps to build a USB drive for Mac OS X or macOS.

  • Mount the Mac OS installer to get .DS_Store, BaseSystem.chunklist, and BaseSystem.dmg. Files from InstallESD.dmg file.

  • Use Disk Utility's Restore feature to create a copy of the OS Install ESD image.

  • Modify the copy of the OS Install ESD image to make it boot successfully.

Do you have other question about making a bootable USB drive for macOS or Mac OS X? Leave your comment below.

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How to Download/Update Apple Mobile Device USB Driver When It is Missing

On every OS X Lion installation a hidden partition is created to enable a method for Lion to be reinstalled on the machine, it is known as the recovery partition or drive and is 650mb in size.

If you bought a new machine from Apple you have OS X 10.7 already installed – but no back up disk! and since you haven’t bought the OSX Lion 10.7 App from the App store you can’t re-download it – so thats why you have the recovery drive as a partition in your main hard drive and to boot from it you need to restart the machine holding down “command” + “r” keys.

From recovery mode you can run Disk Utility, get online help and do a restore from a Time Machine backup and re-install Lion leaving all your other files intact – it just replaces the core operating system.

You can make a bootable USB drive or disk of the recovery drive, but involves a small trip to the Terminal….

1) Launch Terminal from /Applications/Utilities and run:

The primary drive in this list is No.2 with the “Identifier” of disk0s2, the boot recovery drive is disk0s3

We can also identify the recovery drive by the name and the size – set at 650mb

2) Mount the drive:

Output should be:

Now the Recovery HD is mounted in the Finder and you can see it in the sidebar under Devices
Navigate to it from the sidebar – Recovery HD/

3) Doubleclick BaseSystem.dmg to mount it also in the sidebar. This will mount the volume ” Mac OSX Base System”


4) Open Disk Utility in /Applications/Utilities

5) Put in a 2GB+ USB drive, let Disk Utility load it. The USB drive needs to be formatted as Mac OS Extended Journaled, if its not, its time to format it in Disk Utility…

6) Finally in still in Disk Utility, select the “Restore” tab – drag the mounted volume “Mac OSX Base System” into the Source field and drag the USB drive “Volume” (mine is called SuperBootUSBDrive) to the Destination.


Make Bootable Usb From Mac Dmg In Windows

7) Click Restore – 25 minutes later – One bootable USB drive

Your bootable USB drive will be called “Mac OS X Base System” after the restore is complete. Now to boot from it just select it as the Start Up disk in System Preferences or hold down option key on boot and select it from the choice of bootable devices.

If you have downloaded the Lion App from the App Store then you can also make a boot disk/drive from this, guide is here, you need to make the boot drive/disk before you install the Lion App, as the installer is deleted after running it. Thats why the guide here can get you out of trouble.

Couple of footnotes on this – Apple has released a knowledgebase article about the recovery partition, also just released from Apple is an app that will do the same as above.

Update For Newer Models – hidden BaseSystem.dmg

If you have the latest models from Apple that came already shipped with OSX 10.7, then you may not have the “BaseSystem.dmg” but instead see a “BaseSystem.chunklist” , the “BaseSystem.dmg” is there it’s just hidden.

To show it so you can see it in the finder – go to Terminal – enter:

Now it will be visible in the Finder.

Make Bootable Usb Windows 10