A macOS USB installer saves much time when you want to install the OS offline on two or more Macs. Also, it helps in recovering a system after a startup failure. It is easy to make a macOS USB disk from the full installer downloaded from the App store; Apple provides clear-cut instructions for the same. However, people use this feature only when they have a problem with their computer, mainly when their system is not booting up. In this post, we explore the ways to make a bootable macOS USB for Catalina 10.15 and others from Windows PC and Mac.
A.DMG file is the disc image file used by MAC OSX. It is an exact copy of a hard disk or compact disk. The DMG file can be burned to a CD or mount as a normal volume on Macintosh computers. Usually, the data in DMG file is stored in compressed format. On a Windows PC, AnyBurn can convert DMG file to ISO format, or burn it to a blank CD / DVD disc. Install DMG2IMG on a Windows PC after downloading the zipped win32 binary from this website. Open Command Prompt on your PC and execute the following command to convert your DMG into ISO. Now that your ISO file is ready, you can use the Windows ISO burning utility or a. All previous comments restored. In this easy tutorial you will learn how to create a bootable dvd or usb pendrive from a DMG file under Windows 7 to 10. Download TransMac as a zip or executable.
Make macOS Catalina 10.15 USB installer on Windows PC
TimeMachine is the safest option to recover a broken Mac in the offline mode. If a backup is not there, you have to go for a clean installation either from a bootable USB/DVD drive or the Internet. In my case, I lost the boot partition of my iMac and didn’t have a TimeMachine backup. Internet recovery was showing up, but it kept on failing to download the OS files from the servers. As it is my only Mac, I had no option left, until I found the method to use a Windows PC to create a Mac OS bootable USB installer. I did this for making a macOS High Sierra USB drive, and later I was successful in reinstating my iMac. As of now, the OS is Mojave, but the process given below is compatible with all editions of macOS including the upcoming macOS Catalina 10.15.
Step 1: Download macOS Catalina [DMG] for Windows
As said in the beginning, a Mac is must for creating bootable macOS USB disk. If you think about doing it from Windows, the options are limited. The cross-compatibility of extensions for the two OS are entirely different. Luckily some Windows applications support a bootable macOS disk format, DMG. Hence, If we can download macOS DMG file, then it possible build the USB installer from Windows environment.
Most of the sites talking about the bootable macOS USB installer on Windows is not guiding on how to download the required DMG files for the method. Check our page to download macOS Catalina installer installer in DMG format for Catalina, Mojave and High Sierra.
Step 2: Partition USB disk on Windows to make it bootable on Mac
Here we are creating a UBS installer for Mac on Windows. So make sure that we keep the partition of the USB disk to have an appropriate scheme. Converting the USB disk to have a GUID partition table (GTP) is recommended for this method work effectively.
Connect the USB disk to Windows and run the above-given commands in the correct order. It cleans and converts the USB disk to GUID partition table if it is using MBR or something else.
Step 3: Make bootable macOS Catalina USB installer on Windows 10
When the Internet recovery is stuck and fails to download the OS files, you could use Windows to make a bootable macOS USB installer. Out of the two or three software for handling macOS installer [dmg] in Windows, Transmac is the best one. Transmac is not free, but the developers offer a 15-day trial period, and that is sufficient for one-time use. Now let’s move on to the steps to create macOS Catalina USB disk on Windows.
I already have the macOS Catalina 10.15 dmg file on my Windows desktop.
Install the Transmac 12.4 trial for Windows; download here.
Right-click on Transmac icon, and select to run it with Admin privileges.
As shown in the screenshot, right-click on your USB disk and pick the option Restore with Disk Image.
Point the Windows Explorer to the location where you have the bootable macOS DMG file.
Wait until the software completes restoring the USB disk with Install macOS Catalina app.
The disk is ready when you see the message “Restore Complete”.
If you click on the just-made USB installer on Transmac, you could see the macOS Catalina 10.15 files present in the drive.
Now safely remove the USB and connect it it the Mac you would like to recover.
Here we focus on preparing macOS Catalina 10.5 USB installer on Windows. But this method is same and applicable for Mojave, High Sierra and all previous versions up-to OS X Lion.
How to boot to macOS Catalina from USB Installer made on Windows
Check the image below for macOS Catalina USB installer showing up in the boot options. In this way you could recover and restore a Mac without Internet. Some models of Macs show a prohibitory symbol when you boot from macOS Catalina recovery USB made on Windows. In that case, you need to Install Mojave or High Sierra first and then upgrade to Catalina 10.15 using the in-built software updater.
While restarting, Press the Option key on your Magic keyboard or MacBook see the boot choices. However, if you use a Windows keyboard for Mac, press the Alt key. When you see the boot menu, click on Install macOS Catalina (10.15), and proceed to the recovery process.
Alternative: Make a bootable Catalina USB installer on macOS
The recovery partition in a Mac helps in restoring it from TimeMachine or the Internet when there is a system failure. It keeps the essential apps like Disk Utility, which aids in re-installing a fresh copy of macOS. However, this partition gets deleted when you change your Macs hard disk to SSD or like. A bootable macOS USB installer comes helpful in such situations. It is also useful when you want to install macOS on a couple of offline systems without wasting bandwidth and time.
You need a macOS DMG files for making a USB recovery disk in Windows but that not the case when you have a Mac. The only thing is that you have a copy of the Install macOS app, the offline installer downloaded from the App Store. Check out the most reliable ways to macOS USB recovery disk for Catalina, Mojave and High Sierra.
Method 1: Using Terminal to make macOS Catalina USB disk
Maintain a copy of macOS Catalina full installer in the Applications folder.
Use Disk Utility to erase the target USB to have macOS Extended format and GUID partition scheme.
Now, copy the command for macOS Catalina 10.15 from Apple website, here and paste it to the Terminal app.
In the code lines, there is a string “WINYTIPS.” Change it with the name of your USB.
Open the Terminal app in Mac and copy-paste the edited code.
Press the ENTER key and provide Admin password.
Wait for a minute for the system to copy macOS Catalina installer and boot files to the USB.
Method 2: Using a third-party app to make booatble macOS USB disk.
If you are not familiar in dealing with the Terminal app and command-line interface, consider a freeware macOS app to create the bootable macOS installer. Among the many applications out there, we prefer Diskmaker as it supports Catalina, Mojave, High Sierra, and all other macOS builds after Lion. Ebook pdf viewer app mac. https://sbrenew658.weebly.com/quicken-2007-for-mac-download-free.html.
The latest version DiskMaker 9 compatible with macOS Catalina 10.15.
Also, you may consider an alternative, macOS Catalina Patcher by Collin, here. Free video cutter joiner for mac avast identifies as virus. The best thing about the patcher app is that it can make bootable MacOS ISO, and USB disk by downloading Catalina from the Internet, which DiskMaker do not support.
Download and create macOS Catalina USB bootable disk
Download the latest version of the app from dosdude’s portal and mount the dmg file on your Mac.
Click continue until you see the window shown in the screenshot.
Here you may select an existing copy or macOS Catalina or download one from the Internet.
Click on “Browse for a Copy” If you already have macOS 10.15 in your Applications folder.
Now, select the installation method as “Create a Bootable Installer,” and then pick the target USB disk in the next screen. Your macOS USB installer will be ready in a few minutes.
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DMG file is a disk image format created by Apple and massive used on Mac based computers. It can be converted to the ISO format using several different ways, but to burn it on to a DVD or CD to make it bootable is probably the best approach if you're only working with Mac systems. However, we've also covered how to burn a DMG file to a disk on Windows systems, in case that's what you have to work with.
Part 1: Burn DMG to CD/DVD on Mac via Command Line (Terminal)
The first method involves using command line executions to burn a DMG file to disk. In a Mac, this would be done in Terminal, which you can access in Applications >>Utilities >>Terminal. In Windows, it's the Command Prompt, which you can access by entering ‘cmd' in the run window.
Step 1: In Mac, enter the following command: hdiutil burn ~/Path/To/DiskImageFile
Step 2 : Remember to replace the file name with the appropriate DMG file name.
Step 3 : The hdutil utility is quite powerful and will even let you create ISO files, and it's relevant for later versions of macOS like High Sierra or even El Capitan because you can't use Disk Utility to burn ISO to a USB drive. That's only possible on earlier Mac OS X versions prior to El Capitan.
In Windows, you'll need something like TransMac to directly burn DMG to a USB drive. We've described the process in the final section. It's a bit confusing because you don't have any options to burn the DMG to USB. You might end up wondering what to do unless you have a guide. We've shown you how to use it for this purpose in the final section.
Dmg Dvd Burner Windows
Once the process is complete, remove the USB stick and use it to install the application associated with that DMG on any other Mac computer.
Part 2: How to Burn DMG to CD/DVD on Mac via DMG Editor
UUByte DMG Editor, as the name suggests, is an superb toolkit for handing DMG files on Windows and Mac computer. The stock burning feature can easily burn an DMG file to external CD, DVD or USB flash drive without taking much effort. Unlike other programs, there is no need to convert DMG to ISO.
Burn Dmg To Dvd Windows Imgburn
Besides DMG burning, this program also has multiple useful functions for operating DMG files, such as editing, extracting, copying. Basically, it is the only tool you need for DMG files.
Key Features of DMG Editor
1-click burn DMG to CD/DVD or USB drive.
Re-edit DMG file and create a new DMG.
Create bootable disk from DMG image.
Step 1: Install UUByte DMG Editor
Install and run DMG Editor after downloading the installation file from here. Then launch the app.
Step 2: Attach CD/DVD to Computer
You'll see several options on the home page. One of them is 'Burn'. Click on that.
Step 3: Start Burning DMG to USB
Now select the DMG file and insert a DVD/CD, after which you can select the optical drive and start the burning process.
DMG Editor is extremely versatile, and you can even edit your ISO file and add and remove content before you burn it. It also gives you the dual option of burning to a disk or a USB flash drive if you need it. Converting DMG to ISO is a much easier way to handle DMG files on Windows, which are better suited to Mac systems. But if you need, DMG Editor is also available for Mac, which means you can do the same thing on a machine running Mac OS X or even macOS High Sierra.
The best part about DMG Editor is that disk partitioning is very easy since the software supports multiple file systems and partition schemes, which makes it much easier to use if you're not technically adept and knowledgeable about disk image files and how to handle them.
Part 3: How to Burn DMG to CD/DVD on Windows PC
TransMac is a little complicated to use, and you may not be very comfortable as a first time user. You'll get a 15-day trial when you install the utility, so if you're only doing a once-off, it should serve your needs.
Convert Dmg To Dvd Windows
Step 1: Install the TransMac software on your Windows PC. You can get the official download here.
Step 2: Before running the application, insert the USB drive, and then launch the app as Administrator.
Step 3: Right-click on the drive listed on the left side and choose 'Restore with Disk Image'. This will open up a new window where you choose the DMG file and click 'Ok' to proceed. The DMG file will now be burned to the drive you inserted.
Dmg Burner Windows
TransMac is a great utility, but there are some things to keep in mind. First of all, you will need to do a GPT partition on your USB drive. That means you require some knowledge of the diskpart utility in Windows. If you're a novice, this is not a recommended approach. The better option would be to use DMG Editor after converting the file to ISO. It's faster and safer as well.
Dmg To Dvd Windows 7
Summary
Write Dmg To Dvd Windows
Burning DMG to DVD is much harder than burning ISO image becasue less tools available on the market. Fortunately, you can use DMG Editor and TransMac to burn the DMG file on Mac or Windows PC. They are the best two programs for DMG burning in 2018. So don't miss the tool when handing DMG files by yourself.