How To Setup Usb Drive To Boot Dmg

1. Configure To Boot From Usb
2. Set Usb To Boot
3. Setup Bootable Usb

Aug 02, 2018  The third software which is to create a Bootable macOS Mojave USB Installer drive on Windows is TransMac. TransMac is software which is created for Windows platforms to create bootable USB or Format a USB for mac. Basically, TransMac is not free but it allows you to create bootable USB for mac for 15 days for free. Dec 01, 2016  How to Create a Mac OS X USB Boot Drive on Windows. How to install Mac OS X Lion from USB flash drive. If you search online for 'OS X DMG Download' you will.

Apple delivers the macOS installer and applications through the app store since the launch of OS X Lion. The macOS installer has a .app extension when you get it through the official channel. Unlike the macOS DMG installer, which Apple doesn’t provide nowadays, the app version of the macOS install package is not bootable. Hence it is not mountable nor compatible with operating systems like Windows. For some reason, if you want macOS in .DMG or .ISO format, there is a method to convert the .app file. Unfortunately you need a macOS system to convert .app to .dmg to .iso image.

Reasons for converting macOS Mojave or High Sierra .app to .DMG or .ISO

• The macOS in DMG format let to quickly create Install DVDs and bootable USB installers in a few minutes.
• When you convert macOS Install .app to ISO format, you may use it for running macOS on Windows PCs (Hackintosh).
• You can use the DMG file made from the macOS Install app for creating a boot-friendly macOS USB on Windows PC.

Above all, DMG and ISO files are highly portable; it is easy for anyone to upload and transfer them through the Internet.

Convert macOS Installer .APP to .DMG bootable image

The requirement for running macOS, and a USB Pen Drive for converting the Installer application to bootable ISO or DMG image. The step by step process for converting macOS Mojave, High Sierra, Sierra, EI Capitan to the bootable .DMG or .ISO is explained below.

1. First of all, download the full Mac OS installer, and save it in the Applications folder.
2. Next step is to create a bootable USB installer from macOSÂ Install app. I prefer using the macOS Terminal app to create the bootable USB Installer using commands in the screenshots.
3. Now, copy the contents of the macOS USB to a new folder and give it a single word name. We are going to make DMG file on Mac from the newly created folder.
4. Then open the Disk Utility app and then take the “File” menu from the top left corner. Then New Image and Image from folder, and direct the Finder to the macOS file folder.
5. Choose the image format as Hybrid (HFS+/ISO/UDF).
6. The system now starts converting the macOS installer .app bootable .DMG file.

Just in case you find any difficulty, check our video on converting macOS .app to bootable .dmg.

How to convert macOS installer to iso format

There are several ways to convert macOS .app to .ISO bootable image. Usually one need to do APP to DMG or CDR conversion before making it an ISO file on Mac. The Disk Utility app in macOS previously had an option that allows you to convert DMG to ISO/CDR. You can use Terminal and third-party apps to convert Mac OS installer to ISO if it is in CDR format.

AnyToISO app capable of converting macOS DMG to iso format. The free version of AnyToISO doesn’t support converting dmg files above 850 MB. Hence, you need to either purchase or download (Search AnyToISO Pro 3.9.0 in Google) the PRO version of this app.

In my experience, converting DMG to ISO with AnytoISO takes a lot of space and resources if you’re on macOS machine. The system shows out of space notification even though you have enough space left in the disk. Therefore, it is better to transfer the DMG files to a Windows machine and use freeware like DMGtoISO or AnyBurn for converting. Check our page on burning DMG on windows for freeware tools supporting DMG to ISO conversion.

Last Updated on:

This is how I configure USB flash drives so that I can install Windows from USB (WAY faster than using a disk).

11 Steps total

Step 1: Insert the USB drive into the computer, and make sure you can see it in Explorer.

Step 2: Launch a Command Prompt

All typing from this point will be done in this same window.

Step 3: Type: DISKPART {ENTER}

This will start DISKPART.exe, which we will use to get this drive formatted and bootable.

Step 4: Type: list disk {ENTER}

This will give you a list of installed disks, but they are labeled using the disk's number, not the name or drive letter (though it does show the size). If you are not sure which disk you want, open Disk Management, they are listed by all three identifiers there.

Attached is a pic of what this looks like on a Windows 7 machine.

WARNING:
If you select the wrong disk here, you will lose data, and possible overwrite your OS. Be sure you have the right disk selected.

Step 5: Type: select disk x {ENTER}

Where x = the disk number you want to format.

In the case of the example image it would be Disk 3, so to select the disk, type: select disk 3 {ENTER}

Remember to substitute the correct number for the disk you want to select.

Step 6: Type: clean {ENTER}

This will wipe the disk.

Step 7: Type: create partition primary {ENTER}

This will create a new partition on the drive.

Step 8: Type: select partition 1 {ENTER}

Configure To Boot From Usb

This will select the partition you just created.

Step 9: Type: active {ENTER}

This will set the partition to active (this is what allows a computer to boot from a drive).

Step 10: Type: FORMAT FS=FAT32 {ENTER}

Wait for it to get to 100% complete, this will format the drive using the Fat32 file system.

Step 11: Type ASSIGN {ENTER}

This will assign a drive letter to the drive in Explorer.

Now you should have a USB disk ready for the OS source files (you can either extract them directly from an ISO file, or just copy them from an install disk).

Using this, I was able to install Windows 7 x64 on an HP Elite 7000 in just under 7 minutes from first boot to desktop.

Set Usb To Boot

21 Comments

• Datil
  Panda (w bold) Mar 10, 2010 at 07:03pm

  Good how-to, nice and easy to understand.

• Serrano
  Ian Nolan Mar 11, 2010 at 03:58am

  Great how to thanks for taking the time to write it up

• Pure Capsaicin
  Justin.Davison Mar 11, 2010 at 08:16am

  Thanks for sharing, concisely written and easy to follow. Great Job.

• Tabasco
  ITMikeNJ Mar 16, 2010 at 09:34am

  Thanks for the write-up. Makes the whole process simple and it is a valuable tool.

• Jalapeno
  GadJeff Mar 19, 2010 at 08:30am

  Looks alot like this this one:
  http://sbs.seandaniel.com/2009/10/how-to-make-usb-thumb-drive-bootable.html

  Not sure why Sean chooses NTFS in step #10 instead of FAT32.

• Habanero
  Thereal_Joe Mar 19, 2010 at 01:19pm

  This is a really common way to do this, it's much easier than using the HP drive prep tool, and cheaper (free) than some other tools). Just out of curiosity I ran a search for this, and there are numerous tutorials out there on how to do this (and most of them are very similar).

  I can't think of a good reason to use NTFS for this, if anything it would limit the usefulness of the tool.

• Cayenne
  Mark1950 Apr 13, 2010 at 03:21pm

  Good info!!

• Thai Pepper
  Jim H Apr 13, 2010 at 04:04pm

  I spent 4 hours last Friday searching the internet and trying different ways to do this. I guess I'll learn to search SpiceWorks first!! Thanks Joe.

• Thai Pepper
  manclncjj Apr 13, 2010 at 04:09pm

  FAT32 has File and disk size limitations that can cause issues so I use NTFS.

• Datil
  John2851 Apr 13, 2010 at 06:04pm

  Fantastic Directions! One minor issue is that with Win XP diskpart will not see most removable disks so a Vista/Win 7 PC is needed. I know, minor but wanted to leave that comment for others before they spend too much time - honestly like I did when I first used diskpart - on trying WIn XP with this.

• Anaheim
  Don_OB Apr 15, 2010 at 02:39pm

  Has anyone had an issue with this working? I can see the USB drive, but it will not show up in DISKPART. I see the Disk # in Disk Management, but it's not showing up in DOS.

  Is this only a Win7 thing?

  Thoughts?

• Habanero
  Thereal_Joe Apr 15, 2010 at 03:35pm

  I've not seen this in Win7 (and I've done this very thing several times on Win7 machines). Has this drive been used to boot Linux in the past perhaps? Can you read/write to the drive in the OS outside of the command prompt? Can you address the drive from within the command prompt, but not using the diskpart utility (basically can you list the contents of the drive in a command prompt)?

  Minecraft for mac download. Edit The EULAAfter extraction of files is complete, you can edit the EULA file that appears on the screen. Change the status of Eula=false to Eula=true. Open Minecraft AgainOpen Minecraft again by double-clicking on the jar file on the desktop.

  The only time I've ever had an issue where diskpart didn't see a flash drive, it was a drive that I had used previously to boot Knoppix.

• Anaheim
  Suhoy Apr 19, 2010 at 04:22pm

  After you did all instructions above, do following in order to make USB bootable:
  Insert your Windows 7 DVD in the optical drive
  Go back to command prompt and execute the following commands:

  D: and hit enter. Where “D” is your DVD drive letter.
  CD BOOT and hit enter.
  BOOTSECT.EXE/NT60 H: and hit enter. (Where “H” is your USB drive letter)
  Copy Windows 7 DVD contents (including hidden) files to USB.

  I was able to boot and install Windows 7 from USB, it was much faster than from original DVD.

• Sonora
  CEV May 4, 2010 at 09:07am

  What is the minimum size flash drive that should be used when doing this? Can it be done on a 2GB drive?

• Pimiento
  Sennan Jun 24, 2010 at 08:55pm

  @CEV Minimum is 4gb USB stick to fit the contents of the Win7 DVD.

  Another thing to note is that you cannot make a bootable Win7 64 installer USB with a 32 bit operating system.

Setup Bootable Usb

• prev
• 1
• 2
• next