Need to help install windows 8.1 EFI on iMac late 2013

[blackwhite999]

hi everyone,
anyone have a tutorial how to install windows 8.1 with EFI on iMac 14.2 lated 2013 help me pls!
thanks you !

 

[yjchua95]

hi everyone,
anyone have a tutorial how to install windows 8.1 with EFI on iMac 14.2 lated 2013 help me pls!
thanks you !

If it's in the internal drive, just use Boot Camp Assistant. Haswell and later Macs will install Windows natively in UEFI via Boot Camp.

If it's on an external USB/TB drive, follow these steps:

Connect external drive to Windows VM. You must have a Windows VM in VMware/Parallels, or a Windows PC. Any existing Windows environment will do.

What you need:
install.wim file (obtain this from your Windows ISO)

Open elevated cmd.exe

Note: All commands aren't case sensitive, including pathway to files.

Type diskpart
Type list disk
Take note of the disk you want to select
Type select disk 1 (if your disk is Disk 1)
Type clean
Type convert gpt
Type create partition EFI size=100
Type format quick fs=fat32 label=EFI
Type assign letter=S
Type create partition primary
Type format fs=ntfs quick label=W2G (or any other name you wish for label)
Type assign letter=E
Type exit

Open up File Explorer. In your C drive, create a new folder named WIN2GO.
Put the install.wim file in this folder

Back in cmd.exe:
Type dism /apply-image /imagefile:C:\WIN2GO\install.wim /index:1 /applydir:E:\ (this process will take quite a while)
Type E:\Windows\System32\bcdboot E:\Windows /s S: /f UEFI

Restart your entire Mac. After the chime, hold down Option and when prompted to select your boot drive, select EFI Boot.

Proceed installation normally.

After installation, install Boot Camp drivers.

 

[blackwhite999]

If it's in the internal drive, just use Boot Camp Assistant. Haswell and later Macs will install Windows natively in UEFI via Boot Camp.

i do that but i got problem: WE COULDN’T CREATE A NEW PARTITION OR LOCATE AN EXISTING ONE. FOR MORE INFORMATION, SEE THE SETUP LOG FILES

pls help

 

[yjchua95]

i do that but i got problem: WE COULDN’T CREATE A NEW PARTITION OR LOCATE AN EXISTING ONE. FOR MORE INFORMATION, SEE THE SETUP LOG FILES

pls help

Did you get that from the Windows installer or while in Boot Camp Assistant?

You may have to run this Terminal command first: http://awesometoast.com/yosemite-core-storage-and-partition-woes/

 

[blackwhite999]

Did you get that from the Windows installer or while in Boot Camp Assistant?

You may have to run this Terminal command first: http://awesometoast.com/yosemite-core-storage-and-partition-woes/

i get it from bootcamp assistant.
I'm try on terminal but get error

 

[applebutter]

If it's in the internal drive, just use Boot Camp Assistant. Haswell and later Macs will install Windows natively in UEFI via Boot Camp.

If it's on an external USB/TB drive, follow these steps:

Connect external drive to Windows VM. You must have a Windows VM in VMware/Parallels.

What you need:
install.wim file (obtain this from your Windows ISO)

Open elevated cmd.exe

Note: All commands aren't case sensitive, including pathway to files.

Type diskpart
Type list disk
Take note of the disk you want to select
Type select disk 1 (if your disk is Disk 1)
Type clean
Type convert gpt
Type create partition EFI size=100
Type format quick fs=fat32 label=EFI
Type assign letter=S
Type create partition primary
Type format fs=ntfs quick label=W2G (or any other name you wish for label)
Type assign letter=E
Type exit

Open up File Explorer. In your C drive, create a new folder named WIN2GO.
Put the install.wim file in this folder

Back in cmd.exe:
Type dism /apply-image /imagefile:C:\WIN2GO\install.wim /index:1 /applydir:E:\ (this process will take quite a while)
Type E:\Windows\System32\bcdboot E:\Windows /s S: /f UEFI

Restart your entire Mac. After the chime, hold down Option and when prompted to select your boot drive, select EFI Boot.

Proceed installation normally.

After installation, install Boot Camp drivers.

I gota say your method is awesome!

 

[yjchua95]

I gota say your method is awesome!

Originally I was able to get it running in emulated BIOS in a much easier way, but since I wanted UEFI, it added quite some extra steps.

But it's totally worth it. Now I can just plug in my JetDrive USB SSD into any computer, be it Mac or PC, and boot into Windows in UEFI. It's basically a DIY Windows to Go boot drive.

 

[carlob]

Can you do it without a virtual machine? I have a windows laptop I could use.
Thanks!

 

[yjchua95]

Can you do it without a virtual machine? I have a windows laptop I could use.
Thanks!

Yes you can. Any existing Windows environment will do.

 

[carlob]

Yes you can. Any existing Windows environment will do.

I was trying to use that guide but the ISO that you create from Microsoft site does not contain the install.wim file.
There is a boot.wim but not sure it's the same

 

[yjchua95]

I was trying to use that guide but the ISO that you create from Microsoft site does not contain the install.wim file.
There is a boot.wim but not sure it's the same

If you don't have an install.wim file, then there should be a install.esd file.

Here's how to convert the install.esd file to install.wim : http://www.intowindows.com/how-to-easily-convert-install-esd-to-install-wim/

 

[carlob]

If you don't have an install.wim file, then there should be a install.esd file.

Here's how to convert the install.esd file to install.wim : http://www.intowindows.com/how-to-easily-convert-install-esd-to-install-wim/

Thank you, I found a workaround to get a regular ISO file. Right now I'm waiting for the imaging to complete, I think it's been probably 20 minutes and still at 95%.

 

[yjchua95]

Thank you, I found a workaround to get a regular ISO file. Right now I'm waiting for the imaging to complete, I think it's been probably 20 minutes and still at 95%.

It only took 4 minutes in my case.

But then, I was imaging it to an external USB 3 SSD

 

[carlob]

But then, I was imaging it to an external USB 3 SSD

Me too, is a Samsung 850 EVO in a USB 3 enclosure. Anyways it works like a charm, just completed Win installation now I'm going to install bootcamp drivers

 

[yjchua95]

Me too, is a Samsung 850 EVO in a USB 3 enclosure. Anyways it works like a charm, just completed Win installation now I'm going to install bootcamp drivers

You owe me a beer

 

[Chippy99]

It's a while since I did this, but another easy way is simply to install Windows on your internal drive as normal and then use Winclone to move it to an external drive. If you don't want to go messing with extracting files and command prompts and diskpart and everything else.

You'd need to buy Winclone, but then again, if you do want to be able to back up your Windows installation from time to time, it's a useful utility to own.

 

[carlob]

You owe me a beer

Make it two, only problem is that you're down under!

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It's a while since I did this, but another easy way is simply to install Windows on your internal drive as normal and then use Winclone to move it to an external drive. If you don't want to go messing with extracting files and command prompts and diskpart and everything else.

You'd need to buy Winclone, but then again, if you do want to be able to back up your Windows installation from time to time, it's a useful utility to own.

That's exactly what I did not want to do, messing with my internal ssd, partitioning and removing partitions, buying software etc. This guide is really great and you don't really need special skills to type a few commands at the prompt.

 

[Chippy99]

Make it two, only problem is that you're down under!

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That's exactly what I did not want to do, messing with my internal ssd, partitioning and removing partitions, buying software etc. This guide is really great and you don't really need special skills to type a few commands at the prompt.

Fair enough!