Nov 22, 2018 If you have used a mac operating system, then you know that you can’t download macOS Mojave except for app store. I don’t know how, but programmers have decoded that from mac and uploaded the dmg file for windows users. Now windows user can download the macOS Mojave dmg file and they can use it to create bootable USB. However, it's helpful when your own system is a Windows PC and you want to burn the DMG file to a USB drive. In this case, you will need to convert it back to the DMG format for the installation. Part 4: How to Burn DMG to USB on Windows 10/8/7 (TransMac) If you're on a Windows PC, another way to burn a DMG file to a USB drive is to use TransMac. In the end CDR and ISO files are the same, they just have a different extension. Renaming a CDR file to ISO afterwards will fix that. The steps are straight forward: Double click the DMG so it mounts. Open Disk Utility (Utilities Disk Utility). Right click the DMG Mount and select the “Convert” option. Method 3: Convert DMG to ISO on Linux; Method 1: How to Convert DMG to ISO on Windows 10 (DMG2IMG) DMG2IMG is a software utility that converts DMG files into Apple's older IMG format as well as the universally used ISO format. The process is simple, but it requires some command line work.
Creating disk image files allows you to preserve discs, drives, applications and large folders in their entirety for transport, sharing and future use. While you may have used your Apple computer's inset Disk Utility to burn a DMG file to your computer in the past, you may not have known that you can write the disk image directly to a USB storage drive.
Copy all of the files you wish to burn to the DMG into a single folder or volume if you have not already done so.
Launch Disk Utility from the Applications folder.
Select the disk or volume from which you intend to burn the DMG from the list in the left pane.
Select 'New' from the File menu.
Choose 'Disk Image from Folder' or 'Disk Image from disk name' if you want to burn a DMG of a directory or drive, respectively.
Name the DMG file in the appropriate field.
Select the connected USB drive from the file destination browser.
Select the DMG format from the ensuing pop-up menu. Choose from compressed, read only, read/write and DVD/CD master.
What is dmg file format. Click 'Save.'
Tips
Add password encryption to your DMG if desired. Select 'AES-128 (recommended)' from the encryption pop-up in the Image Format dialog. Best disk eraser.
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If you’re still using a Mac OS X the time will come when your computer won’t boot, or a problem may arise where you can’t take control of the device, and booting from an OS X installation media will be required.
This is why it’s recommended that you make a Mac OS X bootable USB when your Mac is in working conditions. However, if you find yourself on a scenario where your device (iMac, MacBook Pro, Air, Mac Pro or Mini) is not responding and you happen to have a Windows device, then you can still be able to make a USB bootable installation media for your Mac OS X to reinstall the operating system using the Recovery Assistant.
These instructions will also work for Windows users, who are running Mac OS X on a virtual machine and need to upgrade to the latest version. For instance, to OS X Yosemite.
Things to know before proceeding
Before you dive into this guide, you’ll need a few things:
- A broken Mac computer with Mac OS X.
- A trial copy of the TransMac software.
- One high quality USB flash drive with 16GB of storage.
- A copy of Apple’s macOS (DMG file).
Now that you have all the necessary ingredients, you’re ready to make a Mac OS X bootable USB using the DMG file of the operating system with the steps below.
How to create Mac OS X bootable USB installation media
Before you can use TransMac, you may first need to partition your USB flash drive with a GPT partition, as a normal MBR partition may not work. To do this, you’ll need to use the Diskpart command-line utility on Windows.
Setting up GPT partition
Use these steps to set up a USB drive with a GPT partition:
- Open Start on Windows 10.
- Search for Command Prompt, right-click the top result and select the Run as Administrator option.
- Type the following command to open Diskpart and press Enter:
- Type the following command to determine the USB flash drive and press Enter:
- Type the following command to select the storage and press Enter:Quick tip: The
select disk 1
command as an example, but you have to replace 1 with the number of the flash drive you want to use. - Type the following commands to delete everything from the USB thumb drive and press Enter:
- Type the following command to convert the drive into a GPT partition and press Enter:
- Type the following command to select the new partition and press Enter: https://hnbtunm.weebly.com/mac-os-1013-download.html.
After you complete the steps, the USB flash drive from MBR to GPT format, you can use the steps below to create a bootable USB installation media to install Mac OS X.
Creating USB install media
Use these steps to create a bootable media to install Mac OS X:
- Download and install a copy of TransMac.Quick note: TransMac is a paid software, but it has a 15-day trial solution, that give us more than enough time to move the DMG files to the USB drive from Windows. (If you want to support the developer, you can purchase the full version.)
- Insert the USB drive that you’ll use to fix your installation of OS X. (Remember that all the data in the USB will be erased. Make sure you take off any important documents.)
- Right-click the TransMac software icon and Run as administrator. (You’ll be prompted to Enter Key or Run, because we’ll be using it once, click the Run option.)
- On the left pane, you’ll see all the Windows PC drives listed, right-click the USB drive that you’re intending to use to reinstall Apple’s OS X and select the Restore with Disk Image option.
- In the warning dialog box, click the Yes button.
- Use the Restore Disk Image to Drive dialog box to browse for the DMG file with the installation files for Mac OS X Yosemite in this case, and click the OK button to create a bootable USB of the operating system.Now, you’ll have to wait a long time. No kidding. It could take one or two hours to complete the process depending on your computer and other variables.
Once your bootable USB installation media is ready, remove it and insert it into your Mac, power it on, holding down the Option key, and select the USB you just created to reinstall Mac OS X.
If you’re having issues trying to create a bootable media, you can get a USB flash drive that comes with Mac OSX ready to install.
Update September 23, 2019: This guide has been revised to make sure it includes the latest changes.
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