Even though it’s always a good idea to prepare Mac OS X bootable USB on a computer running Mac OS X only, at times you might come across situations where you have no options but to prepare the bootable media of Mac OS X on a Windows PC. Take, for instance, your Mac machine is unbootable and you’re unable to fix the issue or re-install the OS using the Recovery Assistant. Or maybe, the Recovery Assistant isn’t appearing when you hold down the Option key.
Mac OS X Bootable USB on Windows
Step 1: The first step is to download TransMac software and install the same on a PC running Windows operating system. Even though TransMac is a paid software, the 15-day trial copy is good enough to prepare the bootable USB of Mac on your PC.
Step 2: Stick in the USB drive that you want to boot and install Mac OS X from and backup all data from it, if any. The drive will be erased completely during the process of making bootable USB.
Step 3: Launch TransMac software with admin rights by right-clicking on TransMac icon on the desktop and then clicking Run as administrator. Upon launching the TransMac software, the Trial reminder dialog will appear. Simply click Run button to continue using the software.
Step 4: Once TransMac is launched, in the left-pane, right-click on the USB drive that you would like to make as bootable, right-click on the same, and then click Restore with Disk Image option.
Click Yes button when you see the warning message on your screen that the drive will be erased.
Step 5: Next, Restore Disk Image to Drive dialog will appear on the screen. Here, click the “…” button under Disk Image to restore to browse to the DMG file of Mac OS X that you want to install using USB and open the same.
Finally, click OK button to begin preparing the bootable USB of Mac OS X on your Windows PC.
Step 6: The TransMac tool, in our test, took a little over 90 minutes to prepare the bootable USB.
Once done, Restore Complete message will pop up on the screen. Close TransMac and safely remove the USB.
Step 7: Finally, connect the bootable USB to your Mac, turn on your Mac, hold down Option key, and then select the USB drive to begin installing Mac OS X. Good luck!
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Download links:
TransMac from here
Hackintosh Version from here