Macbook Pro late 2011 + Windows 10+ High Sierra I'm struggling for two days now trying to install Windows 10 on my Macbook Pro  Can anybody help me out? I tried several methods, and none is working for me.

MacBook Pro 2011 Late
High Sierra
No CD Drive
SSD + HDD (SSD main Drive running osx + hdd storage switched with cd drive)
Modified Bootcamp to use USB Stick

Windows 10 should be installed at the main drive but if its easier to install Windows on my HDD (which I'm only using for storage) I'll take that.
But I guess I tried that as well with the same result.

I tried several methods like :
http://osxdaily.com/2015/06/05/copy-iso-to-usb-drive-mac-os-x-command/
...
I can't find the other links anymore

Clean install without Bootcamp using unetbootin

The final result is always the same when I try to install Windows, I'm always stuck at the step where I have to choose the installation disk, it always says "windows cannot be installed on this disk. The selected disk is of the gpt partition style" or no volume at this drive to install Windows. When I choose to delete the formatted disk it starts the installation, breaks up after a few % and says can't fulfill the next installation step.
I was able to successfully install Windows 10 on my Late 2008 MacBook running macOS Sierra. I created a bootable Windows 10 USB key on another PC and performed a normal install on my MacBook.

As per official guidelines, Late 2008 MacBook does not support installing versions of Windows later than Windows 7 using Boot Camp. But I was able to find a workaround, thereby doing a normal PC installation.

The installer must be created on a pen-drive and not on a external hard-disk as it can create troubles.

I first created a Windows partition on macOS by resizing, plugged in the bootable pen-drive, restarted my MacBook, pressed Alt + r key till the boot device selection screen appeared. Then I performed a normal Windows installation.

Windows can overwrite the boot loader which can be repaired with the recovery partition.