You’ll also need access to a Mac running Yosemite that includes an existing Recovery HD partition. To create a recovery disk, you need a USB flash drive or an external hard drive that has at least 1GB free space. The simplest solution is to put an external USB drive or SD card into service using the OS X Recovery Disk Assistant. However, if your Mac is not online, or if you’ve upgraded an older Mac to Yosemite, that method won’t work. This recovery system is stored on a hidden partition on your Mac’s hard drive - but what if something happens to your hard drive? Well, if your Mac can’t find the recovery partition but it’s connected to the Internet via either Wi-Fi or a network cable, it’ll start the OS X Internet Recovery Feature.
3 GiB disk image 6 GiB disk image createdisk.py a Python script to efficiently create empty disk images If you plan to install the full Mac OS X, then use the 6GB image.
Download preformatted hard disk images here: Two disk sizes are available: 3GB and 6GB.
Start your Mac and hold Command + R to go into recovery mode, from which you can start Disk Utilities, restore from a Time Machine backup, or perform a clean install. Hard disk images To install Mac OS X on the emulator, you need a hard disk image. Con.OS X 10.7 Lion did away with recovery disks, and these days, Apple provides a built-in recovery system within Yosemite. 7.Now plugin both your USB drives on the computer on which you want to install OS X.On the boot prompt SELECT THE 1 GB USB DRIVE.Clover bootloader will be loaded and your OS X installer USB will show up on the boot devices list.DONT CLICK DIRECTLY ON THE INSTALLER.
Your Mac will ask for your password and after that it will write the image to your USB drive. Make sure “ Erase destination” is checked and click the “ Restore” button. You’ll also notice that the “ Restore” button in the lower right corner now becomes active (clickable). The name of the partition (see “ 2” below) should appear.
Now drag the partition of the flash drive onto the input field of the “ Destination” until a green “ +” appears.
You’ll see something similar to the image below just under point “ 1“.
Next select the “ Restore” section and click the “ Image…” button next to the “ Source” input field.Ī window will open in which you have to select the previously copied or moved “ InstallESD.dmg“, and then click “ Open“. A DMG file, like ISO, can be used to install macOS operating system or Mac apps.
It is the Mac equivalent of an ISO file that has been in use since Apple transitioned from the IMG format with Mac OS X. Thats because DMG is not native on Windows. Open Disk Utility (you can find in the “ Utilities” folder of your “ Applications” folder, or you can use Spotlight to find it).įirst we must find our USB drive on the left side of the Disk Utility window – make very sure that you’re picking the right device, since the drive will be completely erased! In my example I’m using a 64Gb Kanguru eFlash (very fast USB pen drives and great customer service!).įirst select the correct drive and partition. As you can see in the image below I selected a partition of the 64.39 Gb drive. To create a bootable USB drive from a DMG file on Windows, you will need to have the right utility. CAUTIONThe drive will be completely wiped in this process!