1. Create Bootable Usb Using Disk Utility Mac
2. Create Bootable Usb Mac Disk Utility
3. Create Bootable Disk Image Mac Disk Utility

If you’re using both Windows and macOS, you’ve to deal with when mac refuses to boot. The reason behind can be from a number of things that could go wrong. This includes system failure, bad updates, power failure, hardware failure. Unless there is a hardware problem that only can be diagnosed at the apple center you can fix your Apple computer.

It is an excellent practice always to have a bootable macOS USB, which you can easily create using macOS operating system. But since we’re here, you probably can want to make bootable USB using Windows 10. Let’s be real, and there are more Windows computers compared to MAC. Fortunately, you can use a Windows computer to create a bootable USB flash drive.

In this article, we’ll help you with the instructions to create a bootable MacOS USB installation media from a Windows 10 computer. So that you can use that USB to install or reinstall (upgrade) Apple’s MacOS. You can create a macos Catalina/sierra bootable USB using this guide to fix your operating system.

What’s needed?

You will need a few things before you get started. The first essential thing in it is a USB drive would be awesome if you use a USB 3.0, but you can get the work done using slow USB as well. So, in contrast, you need these following things.

1. One high-quality USB flash drive with 16GB of storage.
2. TransMac software.
3. MacOS operating system image (DMG file).

Create a blank disk image for storage. In the Disk Utility app on your Mac, choose File New Image Blank Image. Enter a filename for the disk image, add tags if necessary, then choose where to save it. In the Name field, enter the name for the disk image. In the Size field, enter a size for the. To make a bootable installation USB with Disk Utility, the first step is to open it from Launchpad. You will not see the app icon directly. Instead, it is groupped in 'Other' folder in Launchpad. Click the Disk Utility app icon and insert a USB flash drive into the Mac. Bootable USB installers offer an easy way to upgrade multiple Macs to macOS Catalina, to perform clean installs of MacOS Catalina, to perform maintenance from a boot disk like formatting disks, modifying disk partitions, and performing restorations, and much more. We’ll walk through how to create a boot USB install drive for MacOS Catalina 10.15. Open Disk Utility (Applications Utilities) and click on your flash drive in the list on the left. Go to the Partition tab and select “1 Partition” from the Volume Scheme menu. Enter a name for the volume (I called mine “OS X USB”), select “Mac OS Extended (Journaled)” as the Format, and make sure the size is somewhere around 15-16GB.

How to Create a macos Catalina bootable usb

The guide is simple and straightforward if you follow thiese step.

Download and install TransMac on your Windows PC. It’s paid software with 15-day trial, so you can use it within the time to create a bootable MacOS USB flash drive. If you like the software and to support the developer you can buy the full version.

Plug the USB drive to your Windows computer that you’ll be using to fix your MacOS. And we are going to tell you something straightforward – backup if things stored in USB Drive.

Step 1. Open the TransMac, and select Run as administrator. If you’re using the trial version, wait 15 seconds, and click Run.

Step 2. Use your USB drive right-click on it and select format disk format this will format the USB drive so that it can be used to store the Mac OS operating system. One thing you need took care of that the USB drive needs in GPT partition in order to work on a Mac computer otherwise it won’t boot.

When it prompts select a name for your USB it doesn’t matter but just do it and click ok. If the formatting completed successfully, click OK to continue.

Step 3. Again from the left sidebar right-click on the USB drive and select restore with disk image.

Step 4. Now browse to the location where the Mac OS system image file is located and click ok to load it.

Step 5. Click Yes to create the macOS USB bootable media.

Create Bootable Usb Using Disk Utility Mac

It will take a few minutes to complete the process because the Mac Operating System is larger than any other operating systems like Windows and LINUX in size. Now plug the USB drive to Mac computer in order to install, install or upgrade the operating system to the latest version of Mac OS, which can be Sierra or later.

THE TOOL CAN

• Apple File System (APFS) volume read support.
• Open Mac APFS/HFS/HFS+ format disk drives, flash drives, CD/DVD/Blu-ray media, HD floppies, dmg, dmgpart, sparsebundle and sparseimage files.
• Copy files to Mac HFS+ disks and dmg images.
  Format as HFS+ for Mac .
• Save and restore images of disks and flash drives.
• Create, compress, expand and split dmg files.
• Built in burner functionality to burn ISO and dmg files directly to CD/DVD/Blu-Ray.
• Read Mac multisession and hybrid CDs.
• View partition layout.

How to create a GPT partition on a USB flash drive

If the USB flash drive is not working using TransMac, it could be still a partition problem. In this case, you want to redo the entire process again, but this time use the following steps to use the Diskpart command-line utility on Windows to create the appropriate GPT partition.

1. Open Command Prompt as an administrator. Type cmd in run dialog or open it from the start menu.
2. Type the diskpart command and press Enter. This will display that is connected to your computer.
3. Enter the list disk command to view all drives connected to your computer and press Enter. This command will show all of the partitions inside of a disc.
4. Type the select disk command followed the number assigned for the USB flash drive (e.g., select disk 4), and press Enter. This command will select the disc partition of your choice.
5. Enter the clean command and press Enter. This erases and formats the disc.
6. Type the convert GPT command and press Enter. This convert master boot record to new GPT.
7. Enter the create partition primary command and press Enter to complete the process.

Create Bootable Usb Mac Disk Utility

Quickly create a macOS bootable USB on Windows

Now make bootable USB using the TransMac software (follow instructions that are given above). Now connect the USB and power on your Mac computer while holding the option key and then select the USB Flash media to run the installation.

Learn using USB on MAC (Apple support page)

Learn more about making bootable USB.

Create Bootable Disk Image Mac Disk Utility

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