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@maxinspace
Last active September 12, 2016 21:54
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Windows 10 external installation guide

Tutorial on How to put Windows 10 on external HDD for Mac OS

Source - http://goo.gl/9Paijf


Tools Needed

  • Unfortunately you need a Windows 10/8 (prefer) or virtual machine running windows
  • Mac (obviously)
  • USB 3 HDD/Flash Drive (SSD Drive recommended)
  • Windows 10 64bit ISO or DVD
  • Windows AIK (just imagex.exe) link: https://goo.gl/Xvsw5s from the source: http://goo.gl/hJB1DK
  • Bootcamp Drivers

Steps

  1. Setup
  • Get the install.wim file
  • mount the iso or dvd on mac or windows 8/10 and go to the the sources - and look for install.wim
  • move it to C:\wim\ (C meaning your main windows hdd)
  • if you see 'install.esd' instead you cannot continue, try getting an iso which does contain this (it isn’t that hard)
  • from windows AIK get imagex.exe (or just download directly from link)
  • move to C:\ or root of your windows disk (its just easier to locate this way)
  1. Clean, partition and format the hdd/flash (Windows only)
  • plug in your hdd/flash
  • open command prompt (cmd) in administrator mode (right click it and run as administrator)
  • type ‘diskpart’ in cmd to open the disk partitioner utility
  • type ‘list disk’ to show all the disk mounted in your computer
  • keep in mind the number of your disk you want windows in, this will be the external HDD
  • type ‘select disk #’ (replace # with your the number of disk you want windows in)
  • type ‘clean’ to clean all partitions
  • this will erase all data from the disk
  • type ‘convert mbr’
  • type ‘create partition primary size=350’ to create a partition
  • type ‘format fs=fat32 quick’ to format the partition in FAT32
  • type ‘active’ to set the partition active
  • type ‘assign letter=b’ to mount the partition which will open a window (ignore the window)
  • type’ create partition primary ‘to create the partition for windows with the rest of the space
  • type ‘format fs=ntfs quic’k to format in NTFS
  • type ‘assign letter=o’ to mount, another window should open (ignore the window)
  • type ‘exit’ to exit the disk partitioner utility
  • do not close the command prompt
  1. Deploy the Windows installation image (windows only)
  • type ‘cd C:\’ to go to your root in cmd
  • type ‘imagex.exe /info C:\wim\install.wim’ to look at the installations available
  • keep in mind the one you want
  • type ‘imagex.exe /apply C:\wim\install.wim 1 o: ‘
  • replace 1 with the install you want
  • depending on your hdd/flash
  • type ‘o:\windows\system32\bcdboot o:\windows /f ALL /s b:’ to create the boot section
  • Reboot and press Alt/Option to choose your boot up drive.
  1. Boot and setup windows (on mac)
  • plug in your hdd/flash back to your mac and shut down the computer
  • press the power button and press and hold the ALT/OPTION key
  • a boot selection screen should appear
  • select the windows drive (it should be the 'EFI')
  • follow the instructions for the setup
  • the setup will restart the computer a few times, when it does you have to press ALT/OPTION every time
  1. Install bootcamp drivers
  • after the windows is done with the setup plug in your usb with the drivers
  • run 'setup.exe' administrator
  • follow the steps
  • once it is done reboot (don't forget to press ALT/OPTION)
  • Done you have successfully installed windows
  • Remember to boot from windows you have to always press AL/OPTION in the boot up.

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