Inspired by yjchua95 method and researching a little bit in Msoft, I've used a little bit more complete method to partition and implement W10 on my 13" rMBP mid14 using two simple scripts. Worked flawessly with a USB Inateck FEU3NS-1E & EVO 850 combo
This one to create partitions:
Type in an elevated cmd
diskpart
list disk
Take note of the disk you want to select (#7 in my case) then
exit
Copy the text below in green and save it a pendrive as CreatePartitions-UEFI.txt Launch it by typing in an elevated cmd
diskpart /s L:\CreatePartitions-UEFI.txt where L is my pendrive letter where the script was saved as CreatePartitions-UEFI.txt
rem == CreatePartitions-UEFI.txt ==
rem == These commands are used with DiskPart to
rem create four partitions
rem for a UEFI/GPT-based PC.
rem Adjust the partition sizes to fill the drive
rem as necessary. ==
select disk 7
clean
convert gpt
rem == 1. System partition =========================
create partition efi size=260
rem ** NOTE: For Advanced Format 4Kn drives,
rem change this value to size = 260 **
format quick fs=fat32 label="System"
assign letter="S"
rem == 2. Microsoft Reserved (MSR) partition =======
create partition msr size=16
rem == 3. Windows partition ========================
rem == a. Create the Windows partition ==========
create partition primary
rem == b. Create space for the recovery tools ===
shrink minimum=1000
rem ** NOTE: Update this size to match the
rem size of the recovery tools
rem (winre.wim) **
rem == c. Prepare the Windows partition =========
format quick fs=ntfs label="Windows"
assign letter="W"
rem === 4. Recovery tools partition ================
create partition primary
format quick fs=ntfs label="Recovery tools"
assign letter="R"
set id="de94bba4-06d1-4d40-a16a-bfd50179d6ac"
gpt attributes=0x8000000000000001
list volume
exit
Open up File Explorer. In your C drive, create a new folder named WIN2GO.
Put the install.wim file in this folder.
Copy the text below as ApplyImage.bat and launch it as admin
rem == ApplyImage.bat ==
rem == These commands deploy a specified Windows
rem image file to the Windows partition, and configure
rem the system partition.
rem Usage: ApplyImage WimFileName
rem Example: ApplyImage E:\Images\ThinImage.wim ==
rem == Set high-performance power scheme to speed deployment ==
call powercfg /s 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c
rem == Apply the image to the Windows partition ==
Dism /apply-image /imagefile:C:\WIN2GO\install.wim /index:1 /ApplyDir:W:\
rem == Copy boot files to the System partition ==
W:\Windows\System32\bcdboot W:\Windows /s S: /f UEFI
:rem == Copy the Windows RE image to the
:rem Windows RE Tools partition ==
md R:\Recovery\WindowsRE
xcopy /h W:\Windows\System32\Recovery\Winre.wim R:\Recovery\WindowsRE\
:rem == Register the location of the recovery tools ==
W:\Windows\System32\Reagentc /Setreimage /Path R:\Recovery\WindowsRE /Target W:\Windows
:rem == Verify the configuration status of the images. ==
W:\Windows\System32\Reagentc /Info /Target W:\Windows
Two questions:
1) Once you have Windows 10 Bootcamp working on an external drive, how would you go about cloning this to another external drive if upgrading to a higher storage SSD? Is it possible to do this without being booted into the Windows Bootcamp that you would like to clone (i.e., use another Windows machine for it)?
2) Can you take the external drive with Windows 10 Bootcamp on it and boot it from a different Mac than the one you use it with primarily? Specifically, I am curious how some of the Steam games run on two different Macs. Would I run into graphics drivers issues? The two Macs both have Intel HD graphics.
That is easy to do from within OS X with "Winclone" ... plus you can continue to use Winclone on a periodic basis to keep a backup image for when disaster strikes. You can also easily move an internal Bootcamp install to an external drive using Winclone.
http://www.twocanoes.com/products/mac/winclone
You might also use a 2-drive docking station with internal disk duplicate as it is OS and format independent.
Regarding moving the Windows installation from one computer to another ... Windows generally has issues with activation and drivers when trying to simply move the physical disk to a different computer. There are ways around the driver issues by disabling them prior to the move, but the activation will cause a problem, although if it is a retail version, you can easily use the phone-in activation help to get that transferred over.
With Windows 8.1 I recall there was a way to create an official "Windows-To-Go" portable installation from the Enterprise edition of Windows (and there were hacks to allow this to also work with the Professional version posted on these Forums). I don't know that Windows 10 supports this however.
Good luck ....
Note that WinClone Basic doesn't allow you do certain things-- such as transferring windows to an external.That is easy to do from within OS X with "Winclone" ... plus you can continue to use Winclone on a periodic basis to keep a backup image for when disaster strikes. You can also easily move an internal Bootcamp install to an external drive using Winclone.
http://www.twocanoes.com/products/mac/winclone
Works fine on all my systems. Sometimes, getting both access methods activated can be a bit tricky, but most VMs-activated after the tools installation and a reboot or two.
But how do you set it up? What option do you use for creating the VM?
Fusion doesn't recognize my external drive as a Boot camp drive.
You want to "Add" a new VM, so click the button in the upper left corner and select "New Boot Camp". The new pop-up window will give you 2 choices ... select the first one "Create a Boot Camp virtual machine". (The other one will create a stand-alone VM from your BootCamp installation).
Just dropping in to say I have now successfully installed Windows 10 on an external USB Flash Drive. I only have a 128GB MBA so I didn't have enough on-board space. I used a tiny flash drive that sticks out about 3mm from my MBA.
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Instructions:
- Sandisk Ultra Fit USB3. Holds 128GB for about £20 online.
- WintoUSB - free download from http://www.easyuefi.com/wintousb/
- Windows 10 - you can get a free preview ISO from Microsoft.
1. In WintoUSB, on OSX, set up your flash drive.
2. I plan to use this for running games like Skyrim, so I opted to install the Home Edition (Runs fewer services and uses less background CPU)
3. I set the virtual HDD to 50GB to have space for large games, but this was a guess.
4. I used VHDX structure - more modern. The free version of WintoUSB only allows the older VHD structure, but this should be OK. I didn't test VHD though.
5. After install, get boot camp drivers from Apple website (in Windows) or use Boot Camp Assistant in OS X to put on another USB stick (2gb file, takes an hour to build on the USB stick). I chose to use Boot Camp Assistant to make sure I got the right drivers for my MBA.
So far, it works more or less fine. Skyrim works well, far smoother than OSX. I have noticed however in Windows that I can lock it very easily by opening two or more apps at the same time. Perhaps an issue with the USB Flash drive being unable to handle too many concurrent accesses. As long as I stick to one app (or one browser tab) at a time, all is fine.
Also, there is no way to set the computer to always boot from Windows. This means that every boot, I have to hold down Option for the selector, otherwise OSX loads. OSX system prefs boot selector doesn't work. This is only really an issue when first setting up and going through the pain of multiple consecutive reboots.
Just dropping in to say I have now successfully installed Windows 10 on an external USB Flash Drive. I only have a 128GB MBA so I didn't have enough on-board space. I used a tiny flash drive that sticks out about 3mm from my MBA.
![]()
Instructions:
- Sandisk Ultra Fit USB3. Holds 128GB for about £20 online.
- WintoUSB - free download from http://www.easyuefi.com/wintousb/
- Windows 10 - you can get a free preview ISO from Microsoft.
1. In WintoUSB, on OSX, set up your flash drive.
2. I plan to use this for running games like Skyrim, so I opted to install the Home Edition (Runs fewer services and uses less background CPU)
3. I set the virtual HDD to 50GB to have space for large games, but this was a guess.
4. I used VHDX structure - more modern. The free version of WintoUSB only allows the older VHD structure, but this should be OK. I didn't test VHD though.
5. After install, get boot camp drivers from Apple website (in Windows) or use Boot Camp Assistant in OS X to put on another USB stick (2gb file, takes an hour to build on the USB stick). I chose to use Boot Camp Assistant to make sure I got the right drivers for my MBA.
So far, it works more or less fine. Skyrim works well, far smoother than OSX. I have noticed however in Windows that I can lock it very easily by opening two or more apps at the same time. Perhaps an issue with the USB Flash drive being unable to handle too many concurrent accesses. As long as I stick to one app (or one browser tab) at a time, all is fine.
Also, there is no way to set the computer to always boot from Windows. This means that every boot, I have to hold down Option for the selector, otherwise OSX loads. OSX system prefs boot selector doesn't work. This is only really an issue when first setting up and going through the pain of multiple consecutive reboots.
Just dropping in to say I have now successfully installed Windows 10 on an external USB Flash Drive. I only have a 128GB MBA so I didn't have enough on-board space. I used a tiny flash drive that sticks out about 3mm from my MBA.
Also, there is no way to set the computer to always boot from Windows. This means that every boot, I have to hold down Option for the selector, otherwise OSX loads. OSX system prefs boot selector doesn't work. This is only really an issue when first setting up and going through the pain of multiple consecutive reboots.
Should you installed the Boot camp drivers you'll have a new Boot camp control panel inside Windows: This control panel let you choose your startup preference: if you set Windows then your Mac will automatically boot to Windows!
Should you need to Boot OS X just hold down the option key before next Boot!
Hi RedTomato,
So I have a SanDisk USB 3.0 Flash Drive. I tried following your steps, however I wasn't able to get far.
USB Flash Drives on Windows do not show/allow multiple partitions. I suspect I'll have to play around with my USB stick to get to do the necessary installations, but WintoUSB (within Windows) will not allow installation onto the flash drive.
I did do some googling, I know I can create a MBR via CMD on my USB however I think I will need to find a way to make windows show the unused space and allow me to partition it.
So in summary, my USB Flash Drive I'm unable to make partitions on it for the time being until I find a decent software. Were there other steps or did you find a way to partition your USB stick?