Mar 16, 2018  How to Share Files Between Mac OS X and Windows With Boot Camp. Chris Hoffman @chrisbhoffman Updated. How to Install Windows on a Mac With Boot Camp. Copy files to it, and use it as a neutral, shared storage location. Most removable drives — whether they’re USB sticks or larger external drives in enclosures — will be formatted with.

• Mac Bootcamp No Usb Drive
• Boot Osx From Usb Drive

Mar 01, 2015  Question: Q: How to use bootcamp without a usb. I want to use boot camp, but I don't have a big enough usb I don't use. 8 GB USB storage device, or external drive formatted as MS-DOS (FAT) to install the downloaded drivers. I suggest you start at How to install Windows using Boot Camp - Apple Support. Feb 13, 2015 7:27 PM. Why Making a Bootable Windows 10 USB on Mac? When you have a bootable Windows USB, you can easily conduct repairs or make installations on Windows-based computers. It will give you a portable installation drive, and you can access it wherever you are, simply by saving it to a USB flash drive with enough space for the right Windows ISO file. Jan 29, 2019 CD/DVD drives are disappearing from computers, leaving USB storage as the only option when re-installing an operating system. The process is fairly painless and, if you have a bit of time and patience you can complete the task on a Mac.

To troubleshoot an issue with Windows 10 (especially boot-related issues), it can be handy to boot to Windows 10 that is not installed on a Boot Camp partition. It is relatively straightforward to create a bootable USB Flash drive to boot to the Windows 10 installer, and then open up a DOS prompt for troubleshooting.

What is needed

1. USB Flash drive (8 GB or larger recommended)
2. Windows 10 Installer ISO for Windows 10

Preparation

All the preparation is done in macOS on the Mac that is having an issue booting Windows. It is important to use this Mac since it will be used to identify the correct Windows drivers.

USB Flash Drive

The USB Flash drive must be formatted as exFAT.

1. Insert an 8GB or larger flash drive into a USB port on the Mac
2. In Disk Utility, format the Flash drive as exFAT. Quit Disk Utility after this operation completes.

Boot Camp Driver

Open Boot Camp Assistant in the Utilities folder, and download the current Windows Support Software from the Action menu. Save the Windows Support Software to your desktop or other location, but do not save directly to the USB Flash Drive.

Windows Install Media

Download the current install media from the Microsoft website. Windows is not going to be installed, but the install media will give access to the command line tools in Windows. Select the version of Windows that is closes to the version of Windows installed on the Mac (Windows 8, Windows 10). It does not matter what edition of Windows is used since Windows is not going to be installed.

Create Recovery USB Flash Drive

To create the USB Flash drive, follow these steps:

1. Mount the Windows ISO that was downloaded from Microsoft. To mount the ISO, double click on the ISO in the Finder.
2. Drag all the files and folders from the mounted ISO to the USB Flash Drive.
3. Drag the contents of the Windows Support Software to the USB Flash Drive.
4. If there is not an AutoUnattend.xml at the top level of the drive (as shown below), download AutoUnattend.xml, unzip it, and add it to the drive. AutoUnattend.xml provides the location of the $WinPEDriver$ folder to load the drivers during boot.
5. The 2018 MacBook Air (and potentially Macs after that) have cannot load the IntelMEI driver and give a “Windows Setup could not install one or more boot-critical drivers. To install Windows, make sure that the drivers are valid, and restart the installation”. On the USB Flash drive, open the $WinPEDriver$ and remove the IntelMEI folder.

Once the Flash drive has been created, it should look like this:

The $WinPEDriver$ folder is important because the $WinPEDriver$ folder contains the drivers for Windows to boot successfully from the USB Flash drive and the hardware on that Mac.

Boot from the USB Flash drive

To inject the drivers, the Mac must be booted from the USB Flash drive.

1. Insert the USB Flash drive into an available USB port on the Mac
2. Reboot while holding the option key.
3. Select EFI volume in the startup selector.

If Windows does not boot from the USB Flash drive after showing the Windows logo, you may have to run the following command to tell the firmware to boot the windows installer from the USB flash drive. This has been observed on the late-2014 Mac Mini but may affect other models as well. To set the variable:

1. Disable SIP by booting to the recovery partition.
2. Boot back to macOS and open Terminal. Run the follow command and enter the admin password when prompted:

Mac Bootcamp No Usb Drive

sudo nvram InstallWindowsUEFI=1

Insert the USB flash drive if it is not inserted, reboot, and select the EFI volume from the startup selector.

Note the InstallWindowsUEFI variable is cleared at each reboot, so you will to set it again if you do not select the USB Flash Drive.

Command Prompt and Mapped Drives

When Windows 10 starts up, it will prompt for installation of Windows 10. To open up a DOS window, press Fn-Shift-F10 (or just shift-F10) or click Repair Computer->Troubleshoot->Command Prompt (if available).

Once in the command prompt, there are usually 3 drive letters available: X, C, and D.

• X: This is Windows that you are booted into in memory. The files from the boot.wim on the flash drive are copied to memory and then booted to.
• C: Boot Camp partition
• D: The USB Flash drive

Running Utilities

Within the Windows command prompt, you can run utilities on the Boot Camp partition.

Video

Boot Osx From Usb Drive

Boot Camp Assistant User Guide

Newer Mac computers use a streamlined method to install Windows on your Mac. To find out whether your Mac uses this method, see the Apple Support article Install Windows 10 on your Mac with Boot Camp Assistant. If your Mac is an older model, follow the instructions in Install Windows on your older Mac using Boot Camp instead.

What you need

• The keyboard and mouse or trackpad that came with your Mac. If they aren’t available, use a USB keyboard and mouse.

• A full-installation, 64-bit version of Windows 10 on a disk image (ISO file) or other installation media.

  You can download a Windows 10 Disc Image (ISO File) from Microsoft.

• Sufficient free storage space on your startup drive. For information about the amount of free space needed, see the Apple Support Article Install Windows 10 on your Mac with Boot Camp Assistant.

Before you begin

Before you install Windows, make sure you back up important files.

You can use Time Machine or any other method to back up your files. For information about backing up files, see Back up your files with Time Machine and Ways to back up or protect your files.

Perform the installation

On your Mac, do the following steps in order.

Step 1: Check for software updates

Before you install Windows, install all macOS updates.

1. On your Mac, log in as an administrator, quit all open apps, then log out any other users.

2. Choose Apple menu > System Preferences, click Software Update, then install all available macOS updates.

   If your Mac restarts after installing an update, open Software Update again to install any additional updates.

Step 2: Prepare your Mac for Windows

Boot Camp Assistant prepares your Mac by creating a new partition for Windows named BOOTCAMP and downloading the Boot Camp support software.

Important: If you’re using a portable Mac, connect it to a power source before continuing.

1. On your Mac, open Boot Camp Assistant , located in /Applications/Utilities.

2. At the Introduction screen, click Continue.

   The system is checked for total available disk space. Older Time Machine snapshots and cached iCloud files are removed to make space for Boot Camp. This process may take a long time to complete (you can click the Stop button to skip this process).

3. At the Install Windows step, click Choose, then select the Windows ISO image.

4. Specify a partition size by dragging the divider between the macOS and Windows partitions.

5. Click Install.

When this step is complete, the Windows installer starts.

Step 3: Install Windows

1. In the Windows installer, follow the onscreen instructions.

   When the installation is finished, your Mac automatically restarts using Windows.

2. Follow the onscreen instructions to set up Windows.

Step 4: Install Boot Camp on Windows

After installing Windows, Boot Camp drivers that support your Mac hardware start installing.

Note: If the support software doesn’t install automatically, you need to install it manually. For instructions, see the Apple Support article If the Boot Camp installer doesn't open after using Boot Camp Assistant.

1. In the Boot Camp installer in Windows, follow the onscreen instructions.

   Important: Do not click the Cancel button in any of the installer dialogs.

   If a message appears that says the software you’re installing has not passed Windows Logo testing, click Continue Anyway.

   You don’t need to respond to installer dialogs that appear only briefly during installation, but if a dialog asks you to install device software, click Install.

   If nothing appears to be happening, there may be a hidden window that you must respond to. Look behind open windows.

2. When the installation is complete, click Finish.

3. After your Mac restarts, follow the instructions for any other installers that appear.