Quick Guide on how to make a Mac OS Bootable Pendrive on your Windows or Mac Computers Download #TransMac from: Follow us on Social Med.

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The last release of Mac OS doesn't have the option to create a bootable USB from Bootcamp like previous versions, and it is a problem because that require uses other tools.

I am updating this post today Dec 12, 2018. The reason is that I was only using UNetbootin to create the bootable USB, I will leave guide as a second method since it still working, and I will explain to you how you can create the bootable Windows USB without extra software.

The first step for both methods requires to format your USB device to ExFAT.

Format USB to ExFAT

In order to boot from the USB, you need to format the USB to ExFAT, you can do it using Disk Utility (it comes with MacOS).

This step is the same for both methods. You need to show all the devices in Disk Utility' before to start the process.

Select your USB device in the list (not the partition), right click and then click on the Erase option:

In the next screen make sure you select these two options:

• Format: ExFAT
• Scheme: Master Boot Record

Click the Erase button.

If for some reason it fails, probably is because MacOS still using the USB, just repeat the steps, but if you see a screen similar to above screen is because the operation is successful.

Format USB with the terminal

You also can format the USB from the terminal, but you have to take care to use the correct device because, if you use the wrong name you will lose everything.

With this command you can list the device on MacOS:

This is an example, my USB is the disk2:

This command is to format the USB, the last parameter is the the USB:

Copy Windows files to USB - Method 1

This process is very easy doesn't require to install other software, and they are just a few steps:

Open Windows ISO

Just double click on the ISO image, MacOS mount the image automatically.

Copy files

Now you only need to copy the files and paste them to the USB.

• Command + A Select all files.
• Command + C Copy files.
• Go to your USB Command + V paste the files.

This process could fail if you are using a USB with FAT32 because the file install.win is over 4GB, if this is the case try to open the terminal and copy paste the files from there (no always works. Try to follow the instructions to format the USB in ExFAT, NTFS works for some BIOS).

This is the command to copy the files from the ISO to the USB:

Dmg grupo holding s.a. And that is all, now you can try boot from the USB.

UNetbootin - Method 2

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I will show you how you can use UNetbootin to create a bootable USB, it can be used no only for Mac but for Windows and Linux distributions too.

UNetbootin is free software and it is also available for Windows and Linux.

Check the path name of your USB Disk.

Always in Disk Utility, select the new partition that we created in the previous step, and click on the information button, it will give you the information about the new partition.

You also can use the terminal and the command diskutil to see the list of drives:

Download UNetbootin:

• Download the dmg directly from the Website.
  And copy the app to the /Application folder.

• I prefer to use homebrew to install applications, you can check this article for more information: Installing Applications on Mac with Homebrew:

Makes the USB booteable

Open UNetbootin and you only need select 3 options:

• Diskimage and ISO
• Now we need open the ISO Windows image that is on our computer.
• Select your USB device on UNetbootin.
• Click on the OK, button and wait to the process end it will take a time.

NOTES:

• I tested other tools like dd and Etcher but they are not working because Windows requires extra steps, for the moment this is the only easy tool that I know that works if you are on Windows try Rufus.
• Some users reported that UNetbootin is not working, if after to format the USB drive and change the block size is not working for you try another Drive with enough space.

About a month ago, we talked about creating a bootable USB of macOS on a Mac with the help of a free app called DiskMaker X. The app is very easy-to-use and is updated to support the newest version of macOS. /is-volatile-blood-a-hit-or-dmg-poe.html.

UPDATE: If you’re looking to prepare macOS Sierra or Mojave bootable USB, please refer to our new how to create macOS Sierra bootable USB from Windows guide for step-by-step directions.

Even though it’s always a good idea to prepare macOS bootable USB on a computer running macOS only, at times you might come across situations where you have no options but prepare the bootable media of macOS on a Windows PC. Take, for instance, your Mac machine is unbootable and you’re unable to fix the issue or re-install the OS using the Recovery Assistant. Or maybe, the Recovery Assistant isn’t appearing when you hold down the Option key.

Mac users who don’t have access to a bootable Mac machine to prepare the bootable USB of macOS can take the help of a computer running Windows operating system for the job. The only thing is that you must have the DMG file of macOS.

If you have the DMG file of macOS and a USB flash drive of size greater than 16 GB, it’s easy to prepare the Mac OS X bootable USB on a Windows PC. Simply follow the given below instructions to prepare your bootable USB of macOS on a PC.

Create macOS Bootable USB on Windows 10

NOTE: The guide was originally written to prepare Yosemite bootable USB but the guide is compatible with the latest macOS Mojave as well.

Step 1: The first step is to download TransMac software and install the same on a PC running Windows operating system. Even though TransMac is a paid software, the 15-day trial copy is good enough to prepare the bootable USB of Mac on your PC.

Step 2: Stick in the USB drive that you want to boot and install macOS from and backup all data from it, if any. The drive will be erased completely during the process of making a bootable USB.

Step 3: Launch TransMac software with admin rights by right-clicking on TransMac icon on the desktop and then clicking Run as administrator. Upon launching the TransMac software, the Trial reminder dialog will appear. Simply click Run button to continue using the software.

Step 4: Once TransMac is launched, in the left pane, right-click on the USB drive that you would like to make as bootable, right-click on the same, and then click Restore with Disk Image option.

Click the Yes button when you see the warning message on your screen that the drive will be erased.

Step 5: Next, Restore Disk Image to Drive dialog will appear on the screen. Here, click the “…” button under Disk Image to restore to browse to the DMG file of macOS that you want to install using USB and open the same.

Finally, click OK button to begin preparing the bootable USB of macOS on your Windows PC.

Step 6: The TransMac tool, in our test, took a little over 90 minutes to prepare the bootable USB.

Once done, Restore Complete message will pop up on the screen. Close TransMac and safely remove the USB.

Step 7: Finally, connect the bootable USB to your Mac, turn on your Mac, hold down the Option key, and then select the USB drive to begin installing macOS. Good luck!