The UEFI firmware doesn’t require any MBR tinkering to boot a usb drive, because there is no MBR. This is all that is needed to boot the USB drive. The USB drive will be recognized as bootable by the MAC bootloader if it contains the following file structure:

Apple, as always, doesn’t follow standards.

dmg image format also is not supported natively Windows doesn’t support natively HFS Plus filesystem.There are a few difficulties to create a bootable usb stick in windows: The faster the write speed of the USB drive the faster it will finish converting. Run Paragon Partition Manager and convert the USB drive from NTFS to HFS+. Make sure that you have at least 2 times the size of the image as free space. In this case, the macBoot.bat file and OSX dmg file are in the same folder. Usage example: macBoot.bat “OS_X_El_Capitan_10.11.6_MAS.dmg” G: Use the bat file to create a bootable mac usb drive.Ĭommand format: macBoot.bat pathToDMG driveLetter Partition 1 is now the selected partition.ĭiskPart successfully formatted the volume. You should be able to recognize it by its size.ĭiskPart successfully converted the selected disk to GPT format.ĭiskPart succeeded in creating the specified partition. Now select the disk number that represents your flash drive. Execute the command below highlighted with bold text. macBoot.bat script, available from this GitHub repository.Īll the software above is available for free.Please install it in the default directory as I am using that path in the script below.

Paragon Partition Manager Free Edition, download here.How to create a bootable mac USB from Windows.

El capitan bootable usb windows