These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.
![]() Download macOS
You cannot create a USB bootable installer if you are running OSX Lion. If you update your computer to Sierra, THEN you can create a. If you do not fancy using the App Store or the built-in recovery mode to download and run the large OS X 10.9 Mavericks setup file, Apple gives you the option to create a bootable USB drive to.
Find the appropriate download link in the upgrade instructions for each macOS version:
![]() Use the 'createinstallmedia' command in Terminal
* If your Mac is using macOS Sierra or earlier, include the
--applicationpath argument, similar to the way this argument is used in the commands for Sierra and El Capitan.
Use the bootable installer
After creating the bootable installer, follow these steps to use it:
Learn more
For more information about the
createinstallmedia command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter this path in Terminal:
Catalina:
Mojave:
High Sierra:
Sierra:
El Capitan:
Here are some instructions from that will put the ISO onto the flash drive with a Mac. They won't make it bootable though. Read on.Open a Terminal (under Utilities).Run diskutil list and determine the device node assigned to your flash media (e.g., /dev/disk2).Run diskutil unmountDisk /dev/disk N (replace N with the disk number from the last command; in the previous example, N would be 2).Execute sudo dd if=/path/to/downloaded.iso of=/dev/disk N bs=1m (replace /path/to/downloaded.iso with the path where the image file is located; for example,./windows7.iso).Run diskutil eject /dev/disk N, and remove your flash media when the command completes (this can take a few hours on slower drives)Now.
After you read all that, on the Gizmodo page it says that if you want to make it bootable you should use a utility called Live USB helper they link to (which isn't there any more) and use a Mac mounting tool (which isn't there either!) to force the ISO to mount on the Mac so you can copy the files over. That article may prove useful, but probably not. I can find other copies of Live USB helper out there, but they are all Windows executables.One method that will work is to swap the hard drive out of the PC and into the Mac. Put your Windows 7 installation disc into the Mac optical drive, and install Windows 7 on that drive. Once it is up and running (don't worry about drivers yet), follow these steps. Run Command Prompt as administrator. Type to Command Prompt:%windir%System32SysprepSysprep.exe, and hit Enter.
In sysprep dialog that opens, choose “System Cleanup Action” as “Enter System Out-of-Box-Experience (OOBE)”, select “Generalize”, and select “Shutdown Options” as “Shutdown”. Click “OK”. Sysprep generalizes now your Windows 7 setup and shuts down your computer.Do not run any other programs during this phase!.
Remove the drive from your Mac. Put it back into the PC. Boot the PC from sysprep generalized hard disk.
You will notice Windows booting as if it was the first boot after installation, installing default and updating registry. One or two reboots are needed, depending on your system specifications.
When Windows finally boots up, you will need to enter all information as if this really was a new, fresh installationAll that is from, but it applies in this situation a well, since you would be moving a Windows 7 installation from one computer to another. Considering that trying to make a Windows bootable USB stick with a Mac requires tools that either don't exist any more or are not being developed any more. This second method will most likely prove more dependable. Assuming you have burnt your Windows CD into a ISO file with the tools like:1. Jump into a folder here2.
Get the latest version of zip archive with the keyword 'mac' in the filename.3. Download and open it up on your Mac OS X desktop.4. On Unetbootin interface, choose Diskimage-ISO and then select the Windows ISO file on your local hard drive.5. Select the right USB Drive and then click OK to start writing ISO data onto your USB drive.Once done, you're ready to boot your computer with this bootable USB drive, like a DVD installation disk. You could also use on your Mac and install Windows quickly, then use Windows to create the media for the PC. You just need to allow windows to read from the USB port.Microsoft published for Internet Explorer testing purposes, but you can also use them to create a bootable USB stick.To allow Windows to read from the USB port you'll need to install the. Then you can enable the USB 2.0 (EHCI) Controller in the virtual machine's settings (Ports - USB).Then when you insert the USB stick, it will probably first be detected by OS X, and since only one OS at a time can acces the port, you should eject it in OS X.
Then it should automatically show up in Windows. If it's not, try to click the USB cable connection icon at the right bottom in the virtual machine. The USB port should be listed there and when you click it it should be mounted.Then you can use a tool such as to create a bootable USB stick. As none of the answers I found on the internet worked for me, here are the steps that I ended up following.First of all, brief description of my setup:. I want to install Windows 7 (32-bit) on a PC (not on a Mac) using a USB removable media (8GB).
I have an ISO image of the installation DVD. I want to prepare the USB media on my Mac (OS X 10.10 Yosemite). my MacBook Pro only has USB 3.0 portsWhat I tried:.
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the typical suggestion of using hdiutil to convert ISO to UDRW IMG and then using dd to copy it to the USB. While I did not encounter any errors, the resulting USB media was not bootable. using UNetbootin to create the media (supplying Windows installer ISO as custom ISO). While I did not encounter any errors and the resulting USB media seemed to be bootable, it just crashed during boot (started to boot then halted the system, no error).
using Windows inside VirtualBox to write to the USB stick did not work either, as VirtualBox does not support USB 3.0 yet (I even updated by VirtualBox to 5.0.0 RC1 but still no luck. Maybe newer versions will work)SOLUTIONAs none of the above worked, I ended up first and then used that Ubuntu installation (it has GRUB2!).
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January 2023
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