How to make usb bootable mac os

How to create a bootable installer for macOS

You can use an external drive or secondary volume as a startup disk from which to install the Mac operating system.

These advanced steps are primarily for system administrators and others who are familiar with the command line. You don’t need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.

What you need to create a bootable installer

• A USB flash drive or other secondary volume formatted as Mac OS Extended, with at least 14GB of available storage
• A downloaded installer for macOS Big Sur, Catalina, Mojave, High Sierra, or El Capitan

Download macOS

• Download: macOS Big Sur, macOS Catalina, macOS Mojave, or macOS High Sierra
  These download to your Applications folder as an app named Install macOS [ version name ]. If the installer opens after downloading, quit it without continuing installation. To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.
• Download: OS X El Capitan
  This downloads as a disk image named InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.

Use the ‘createinstallmedia’ command in Terminal

1. Connect the USB flash drive or other volume that you’re using for the bootable installer.
2. Open Terminal, which is in the Utilities folder of your Applications folder.
3. Type or paste one of the following commands in Terminal. These assume that the installer is in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you’re using. If it has a different name, replace MyVolume in these commands with the name of your volume.

Big Sur:*

Catalina:*

Mojave:*

High Sierra:*

El Capitan:

* If your Mac is using macOS Sierra or earlier, include the —applicationpath argument and installer path, similar to the way this is done in the command for El Capitan.

After typing the command:

1. Press Return to enter the command.
2. When prompted, type your administrator password and press Return again. Terminal doesn’t show any characters as you type your password.
3. When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the volume is erased.
4. After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume. Click OK to allow the copy to proceed.
5. When Terminal says that it’s done, the volume will have the same name as the installer you downloaded, such as Install macOS Big Sur. You can now quit Terminal and eject the volume.
   

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[Top 4 Ways ] to Create Windows 10/8/7 Bootable USB From ISO

Creating a Bootable Window 8 ISO from Mac was quite easy back then where Mac OS X was in the trend. Later, Mac OS Mojave came into the picture, and the in-built Boot Camp Assistant is no longer supported.

Therefore the process to create Windows 10 bootable USB on Mac for pc from ISO became much more complex and tricky. However, irrespective of the process complexity, Since you are reading this guide, you don’t have to worry about the complexity of the process to burn ISO to USB windows 10 using Mac.

In this guide, I have listed 4 different ways to create a windows 10 bootable USB from ISO on a Mac device. Besides this, we have briefly explained why you should have a bootable windows 10/8 USB ready with you.

Let’s begin with the explanation first.

Part One: Why to Create Windows 10/8/7 Bootable USB on Mac is Tough?

Part Two: How to Create Windows 10/8/7 Bootable USB on Mac

Part Three: Additional Tip

Part One: Why to Create Windows 10/8/7 Bootable USB on Mac is Tough?

There could be a situation where your Windows system is compromised due to some virus attack or sudden malware attack. Therefore, it’s always handy to have an extra bootable USB lying around so that in the future, if anything goes wrong, you have Windows available with you.

But the thing is, creating a windows bootable USB from ISO on mac is quite tough. If you are doing it for the first time, you might end up getting different unknown errors.

Because Mac Computers have a different architecture than Windows Computers. Mac computers have got some discrepancies that make them vulnerable while operating on different files especially, the files that are created for Windows OS in the first place.

Apart from this, an ISO Image file contains fragmented and archive files compressed from an optical disk. In order to burn them to a USB, i.e., creating a bootable USB from ISO, segregation of the image files is required.

Part Two: How to Create Windows 10/8/7 Bootable USB on Mac

Before you jump on the 4 ways to create a windows USB on Mac, Let me tell you that there are some pre-requisites of these methods.

All of them are listed below:

• Windows 10/8 ISO file.
• USB Flash Drive of at least 16 GB Memory

You can either ask a friend for the ISO file or instead, you can directly download the required ISO file from Microsoft’s portal.

Now, let’s move to the different ways to create windows bootable usb on mac:

Method 1: Create Windows 10/8/7 Bootable USB on Mac Using “Boot Camp Assistant”

Earlier, I have told you the after the release of macOS Mojave and later, Boot Camp Assistant is no longer supported but if you are using an older version of macOS on your Mac device, this method will be ideal for you.

Follow the below-mentioned steps carefully:

Insert USB Flash Drive.

Now run Bootcamp Assistant, select the box for «Create a Windows 7 or later version install disk» and uncheck «Install Windows 7 or later version.» Click Continue to go for the next step.

Once the ISO file is located, you need to select the USB Flash Drive.

A new process will begin, you have to wait until it terminates successfully.

Once the process is completed, now click «Quit» to exit the app and then «Eject» the USB drive from your Mac.

That’s how you are going to create a bootable USB disk using Mac’s Boot Camp Assistant. Maybe you also want to know how to create windows 10 bootable usb on mac without bootcamp, Please read on, because the following three methods can help you to create bootable windows usb on mac effectively.

Method 2: Create Windows 10/8/7 Bootable USB on Mac Using “PassFab 4winkey”

If you are looking for a precise tool which can create windows 10 bootable usb on mac for pc without bootcamp, and it will reduce maximum hustle, PassFab 4WinKey is an incredible option for you. Though it’s paid, it is worth every penny spent.

Apart from creating Bootable USBs, PassFab 4WinKey has other features like using this tool, you can reset the Windows Admin Password. Overall, it’s a great package.Since we are only talking about Bootable USBs in this guide, we will strictly focus on it only. Before we begin with the steps, it is recommended to download and install the tool.

Insert USB Drive.

Launch the “PassFab 4WinKey” application. Choose one windows system ISO file and download

Select the “USB Flash Drive” option in the application window.

Click on the “Burn” option and wait for the process to terminate successfully.

Once the process is completed, Hit “Ok”.

That’s how you create a bootable USB from ISO using PassFab 4WinKey. Tthe ISO image has been automatically downloaded from the tool itself. Therefore you don’t have to look around for the Windows ISO file.

Video Tutorial about How to Create Bootable Windows USB on Mac

Method 3: Create Windows 10/8/7 Bootable USB on Mac Using “UNetbootin”

Before jumping on into the process, let me explain to you the UNetBootin tool. It is a free, open-source utility application that enables you to create boot windows USB from Mac in just a few clicks.

Before we begin with steps, you must Download and Install UNetBootin from its official website.

Follow the steps to avoid random/ unwanted errors:

Insert a USB drive that is empty.

Navigate to “Disk Utility” on your Mac Device.

Launch the “UNetBootin” Application”.

Click on the “DiskImage” option, and select the ISO file.

In Drive: Column, enter the “Drive Name” that you had remembered in Step 4.

Warning:

Make sure you have entered the correct Drive Name, otherwise you’ll end up getting errors or formatting one your local drive.

At last, Click on the “OK” button.

The process of creating a bootable USB will automatically start and it will take a few minutes to terminate successfully.

Though UNetBootin is one of the best utility tools for Mac, but we can’t say it’s the perfect tool. There could be situations where the tool might throw some error without any actual issue.

If you want to create a windows 10 bootable USB on Mac without any errors and don’t want to pay for any tools, you could go with the 4th Method i.e using Terminal. But it also has few disadvantages.

Method 4: Create Windows 10/8/7 Bootable USB on Mac Using “using Terminal”

In this process, you have to write a few lines of code to complete the process successfully.

Don’t worry, you don’t have to go through different internet guides to find the code. I have it all here for you.

Connect the USB Drive to the Machine.

Launch “Terminal” and Hit the following command:“diskutil list”

Hit the following Query, just change the device_name with your Device’s Name.

diskutil eraseDisk MS-DOS «WIN10» GPT device_name

Here, you are formatting the USB drive and naming it «WIN10». Be very careful with the device name. The wrong entry could format your Mac’s local drive.

In this step, you need to have the address of your ISO file. Once you have it, hit the following command to mount the ISO file.

hdiutil mount

In the above command, replace “filelocation” with the actual location of your file include the name of the extension. For instance, if your file is located in the downloads folder then your file location will be :/Download/Windows-10.iso

• Don’t get confused with the location, otherwise Terminal will throw an error.

Once you have mounted the ISO file, hit the following.

cp — rp /Volumnes/ESD-ISO/* /Volumes/WIN10

With this command, you are telling the terminal to copy the ISO file in the USB drive and it will automatically make it executable.

The above step could take a couple of minutes, once it is completed, you have to unmount the ISO Image. Run the following command:

hdiutil unmount /Volumes/ESD-ISO

That’s all, you have successfully created a bootable USB drive and you can use it for installing windows on any device now.

Teminal is very suitable for making Windows 10 bootable USB on Mac, but if you enter the wrong command, all data on the selected drive will be erased and all data will disappear within a few seconds. Therefore, this is not an ideal solution for beginners who are not familiar with the technical staff.

Part Three: Additional Tips

Apart from these methods, I wanted to discuss a few most asked questions here.

Q1: Is it safe to Install Windows on a Macbook?

The majority of the readers ask me this question and I want to tell all of them that it is completely safe to install Windows on a Macbook. Actually, I have seen people using Windows on a Macbook. Most developers use Windows in Virtual Machine on their Macbook.

Q2: Is it possible to create a bootable USB using Disk Utility?

Yes, it was possible back in the days when MacOS X was used. In the latest macOS versions, this feature of the Disk Utility application is removed due to security reasons. Therefore if you are using an older version of Mac, you can use Disk Utility as well.

Final Notes

So, these were the 4 Best methods to create a bootable USB drive using a Mac device. All these methods are tried and tested, therefore each of them is reliable.

You can pick any of these at your convenience and desire. But if you want to the easiest method to create Windows USB on Mac, PassFab 4WinKey is your ideal choice! Certainly if you came across some error that is bothering you, do let us know in the comments below. We will solve it together.

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