Bootable Drive Maker Dmg

Preparing for a macOS bootable disk is very crucial for system upgrade, downgrade and troubleshooting. A macOS DMG file can be a great help when it comes to creating bootable USB installer. With a macOS DMG file, you can create a bootable installation media on a Windows PC or Mac. However, it is not the way recommended by Apple official, which only provides a macOS installer app you can download from Mac App Store for this purpose. Hence, this only works on macOS based on the solution Apple offers. If you are unable to login a Mac, then this method becomes useless.

  • Ok, so lets continue with TransMac Restore Disk Image to Drive. On this screen, select the InstallESD.DMG file and click OK. Follow the steps below to make a bootable Windows 10 USB flash drive using Rufus: After downloading the setup file from Rufus’ official site, run the EXE file to launch the tool.
  • May 25, 2021 Move 2: Burn Windows 10 to USB Drive. To create bootable USB from ISO, some of you may choose to use USB bootable software like Rufus. It is thought as one of best, free, open-source and easy-to-use Windows 10 USB tool since it can create bootable USB for different kinds of operating systems.

Download poweriso and install it in your windows pc. Step 2.: you can import the dmg file directly by clicking on ‘burn' in. Step 3.:now review the settings to select the burn speed. Step 4.: now click on 'burn' and wait. To create a bootable usb drive from a dmg file on windows, you will need to have the right utility. TransMac - Make DMG File Bootable USB on Windows This is a fairly robust application for creating bootable USB on Windows from a DMG file. However, there's a preparatory step to be executed before you can create the bootable USB drive.

In fact, it is not difficult to download macOS dmg file from third-party sources. You can find hundreds of websites doing this. However, it is risky to use them as the publisher could inject virus, malware or adware along with macOS installation file.

But no worries! It is totally possible to create a clean macOS dmg file by your own without safety concern as long as you have a Mac computer at hand. We will share all details regarding this topic. Please read this post carefully to make a bootable macOS DMG file by you.


Before diving into the details, there are a couple of things you should prepare for.

First, a USB flash drive with at least 16GB storage. And USB 3.0 device is more preferred as it has much faster reading and writing speed than traditional USB 2.0 device. This reduces the time dramatically for file writing and boost the file copying time during installation process. And don’t forget to back up the drive.

Secondly, macOS installation app. You can download it from Mac App Store by searching the name. Or click the above link directly to download a specific version of macOS:

macOS Big Sur:

macOS Catalina:

macOS Mojave:

macOS High Sierra:

Once the download is finished, you will see the installation app (Install macOS Big Sur as example) in Application folder.

Lastly, make sure there are enough free disk space (20 GB and more) left on your Mac. If not, you need to delete unused and large files on your Mac with the native service (About This Mac ->Storage ->Manage)

How to Create macOS Big Sur DMG File (Big Sur as Example)

Once you get the macOS installation app and a USB drive, then it is time to create a macOS DMG file by using the following commands. In the following example, we will use Big Sur as demonstration as a lot of users want to test the latest version of macOS.

Bootable Drive Maker Dmg

Now, open Terminal app from Launchpad and type to enter into Desktop folder of current user. This is not mandatory, just for convenience.

cd Desktop

Next, type this command to create a new dmg file (BigSur.dmg) in Desktop folder:

hdiutil create -o BigSur -size 20000m -volname BigSur -layout SPUD -fs HFS+J

  • 20000m: the file size of new dmg file in MB.

  • BigSur: the volume name of dmg file.

For reference, hdiuti is the built-in utility for manipulating disk image file on macOS. You can check this webpage for more details.

Once the dmg disk was created, please double click to mount it or use this command instead. The mounted path is at /Volumes/BigSur.

hdiutil attach BigSur.dmg -noverify -mountpoint /Volumes/BigSur

Bootable Drive Maker Dmg File

When the disk image is mounted successfully, you can copy macOS installation files to it with createinstallmedia command. Here is the example for macOS Big Sur:

sudo /Applications/Install macOS Big --volume /Volumes/BigSur –nointeraction

Note: Make sure change the volume name (BigSur in this example) to the one you changed previously.

You will be asked to input the login password to grant permission of above operation. After that, wait for a couple of times before you receive a completed message, saying Install media now available.

Finally, double click the mounted name in Finder app to eject the disk from your Mac.

Reminder: If you encounter any error message during the above process, make sure check the command are entered correctly, especially the command parameters you have modified, such as file path, volume name.


This is a complete tutorial for creating macOS DMG file on a Mac. Once it is done successfully, you can burn the dmg file to USB to make a bootable USB installer on a Windows PC or Mac.

ISO files are essentially exact copies of a disk, program, file or folder. Although ISO files are usually used to copy the contents of a disk, they can also be created from specific files, or even folders that contain other subfolders and files. This article shows you three different software utilities that can be used to create ISO files from files or folders on your computer.

Free ISO Creator 1: UUByte ISO Editor (Windows 10/8/7 and Mac)

UUByte ISO Editor is an extremely versatile ISO creation and burning software. It has multiple utilities built into it, including creating image files or ISO files from disks, burning files to disks, copying or erasing disks, and also creating ISO files from files and folders. The interface is simple enough for novice users to get comfortable with quickly, and the steps are easy to follow.

Why Choose UUByte ISO Editor

  • Create ISO image from local files or folders.
  • Quickly Burn ISO to USB or DVD.
  • Create Windows bootable USB in minutes.
  • Extract content from ISO file.
  • Freely edit any ISO file and re-built the origin image.

Step 1: After downloading and installing UUByte ISO Editor on your computer (Windows or Mac), you will see an option called 'Create' on the main screen .

Step 2: Click on it and then click on the 'Add Files' or 'Add Folder' button. This will allow you to add whatever files and folders you need to the compilation of the ISO file. Another alternative is to either drag and drop or copy paste the folders and files to the compilation window.

Step 3 :Check if all the files and folders that you need for the ISO file are present. If there is anything you do not need, you can remove it at this point by using the 'Remove' option. There are also several other options such as renaming the content, applying labels, adding new folders, and changing advanced settings.

Step 4: Once you are satisfied that the content and the settings are as per your requirement, click on the 'Create ISO ' button. You will now be asked to name your target ISO file. Type in an appropriate name and then click on 'Create Now'. Once it has completed the creation of the ISO file, you may close the program by using the close button. In your selected target location, you should now be able to see the ISO file containing all the folders and files that you specified during the compilation.

Free ISO Creator 2: ImgBurn (Easily Convert Files to ISO)

Another versatile tool to create ISO files or disk images from files or folders on your PC is ImgBurn. It is used by a tremendous number of Windows users and is considered more reliable than most other ISO creation utilities. Also a great tool to burn ISO to CD.

One unique feature of ImgBurn is that once the ISO file has been created and you burn this file to create a bootable disk, you will be able to verify the disk to see if the ISO file was burned properly. The steps below describe how to use ImgBurn to create an ISO file from files and folders on your computer:

Step 1 : Download and install ImgBurn from the official website. Open the application and, on the first window, you will see an option called 'Create image file from files/folders'. Select that option.

Step 2: Once you are inside the compilation page, use the 'Source' option to add files and folders for the compilation. Once you have done this, you may a select target location for the ISO file in the 'Destination' section.

Step 3: If you look at the right hand side of the compilation window, you will see several basic and advanced options. You may leave all default values as they are, or if you require some specific parameters, you can set them here. For example, if you want to include system or hidden files, or restrict it to archived files alone, this is where you would make those changes.

Step 4: Once you check that the settings are all correct, you may proceed to click on the 'Build ISO' icon at the bottom of the left side of the software interface. In a few moments, your ISO file will be created and saved to the location that you specified earlier.

Free ISO Maker 3: ISO Create Wizard

This ISO creation utility is extremely simple to use, but it is equally efficient and an ideal way to create ISO files from your local files or folders. You can also use this utility to create virtual drives from these same folders and files, and there is also a file size indicator so that you will know the size of the ISO file before creating it. Here is how to use free ISO create wizard:

Step 1: Download and install the application on your PC. When you launch it, you will see a window when you select your source folders and files, and the destination for your ISO file.

Step 2: Once you have selected your source files, folders and subfolders, you will need to specify a name for the ISO file and select the type of file system to be used to create the ISO file. When you are done, click on 'Next' and then confirm the ISO file creation.

Step 3: Assuming that you have applied the appropriate settings in the compilation step above, you will soon have an ISO file ready for use in the destination that you specified earlier.

Bootable Drive Maker Dmg Windows 10


Bootable Drive Maker Dmg Windows 10

All of these utilities are quite versatile when it comes to managing ISO files and their content. However, you must also be aware that not all of them work 100% of the time. There are often errors that occur while creating the ISO file, and these errors may show up later once you burn the ISO file to a disk and then try to use it. You may also experience errors with the compilation and creation process of the ISO file. If you are unable to successfully create a valid ISO file using any of these methods, you may consider using alternate premium utilities that have much higher success rates for creating ISO files from files and folders on a local drive.