I ran Windows on Mac using Bootcamp, but apparently I'm having so many compatibility issues, especially with this eGPU.

So I was thinking to manually install Windows on my MacBook Pro 13" 2019, and check if this would allow my eGPU to work. Apparently the eGPU works fine on both Windows and MacOS, but it does NOT work on BootCamp.

The problem must be with Bootcamp drivers, in fact the eGPU works fine in Windows. Instead it specifically says the eGPU does not work on Bootcamp (not on Windows, but on Bootcamp). So I am thinking installing Windows on a partition myself, with another boot loader rather than bootcamp, might help.

I have found How to install Windows 10 into a 2013 iMac without using the Boot Camp Assistant, USB flash drive or third party tools? but the solution there is for a block size of 512. I need a solution for a block size of 4096.

Not looking for Virtual Machines solutions.

  • Using Bootcamp actually installs Windows in its own partition, so it‘s not clear what you actually want to do here. Can you clarify?
    – nohillside
    Commented Jun 7, 2020 at 7:32
  • @nohillside BootCamp drivers may be the issue
    – FET
    Commented Jun 7, 2020 at 7:33
  • So you just want to partition the disk and then install Windows directly into the empty partition? Where are you stuck?
    – nohillside
    Commented Jun 7, 2020 at 7:35
  • 1
    Boot Camp is may things. However, Boot Camp is NOT a boot loader. Commented Jun 7, 2020 at 10:03
  • 1
    With the 1909 release of Windows, your Mac requires a driver from the Windows Support Software in order to access the internal drive. So I do not think no Boot Camp software is possible with this release. I do not know if the 2004 release of Windows includes a driver. Commented Jun 7, 2020 at 17:39

1 Answer 1


Bootcamp just packages some drivers and saves you time from learning how to manage the boot process, there’s zero requirement to use it. The only hard step is on macs with T2 chips, you have to disable secure boot, so watch out for that.

I really like BootRunner since it saves me far more time than the cost to pay for my seat, but I also really like to keep dual booting. See if it saves you time before paying for it. For me the support for third party graphics cards was very appreciated.

There is no one more knowledgeable that David Anderson and his posts are master classes in how to work with storage on Mac hardware. How to install Windows 10 into a 2013 iMac without using the Boot Camp Assistant, USB flash drive or third party tools?

I would put in a smaller drive temporarily so you can vet his instructions on 512 block size if you can’t wait for him or someone with his skill to do the math if you can’t figure out which items in his recipe need an adjustment.

  • So it does support eGPU?
    – FET
    Commented Jun 7, 2020 at 16:03
  • Also, I have T2 chip, but I can disable curtail while doing any set required
    – FET
    Commented Jun 7, 2020 at 16:04
  • Yeah - I read you as 2009. Initially, I fixed that - thanks. I don’t have that eGPU to test. If someone wants to send me the gear to test, I would gladly. Sorry for the error @FET - my hunch is you’ll spend less time with the bootcamp drivers and identifying what to add rather than starting new, but I haven’t the gear to test that out.
    – bmike
    Commented Jun 7, 2020 at 16:06
  • I am checking this guide at the moment: egpu.io/boot-camp-egpu-setup-guide If this fails I shall check that guide again and see what needs to be changed for 4096 bytes
    – FET
    Commented Jun 7, 2020 at 16:08
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    I shall keep you updated, if these guides fail I am calling anyway Sonnet' Support tomorrow :)
    – FET
    Commented Jun 7, 2020 at 16:10

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