I'm currently using a Mac running 10.12. I have a Windows 10 key. I downloaded the ISO file to try boot with that. I read I guide that told me to use a program called Rufus, But it's not available for mac so, I found a similar program called "unetbootin". I converted the USB that I'm using into a bootable device through the program. And booted up my pc. It automatically booted from the USB but all I was getting was this:
(The white _ flashing) Seems to be a common error.
Then seeing as that didnt work I used the BootCamp assistant, but for some reason it said it ran out of space, so that one didnt work. I then found a video on youtube that showed you how to create a bootable drive.
That step resulted in the same error
Now when i try to erase the USB through Disk Utility it says that it can't, unmount the disk and Read the last block.
Any help would be much appreciated, Thanks in advance.

Then seeing as that didnt work I used the BootCamp assistant, but for some reason it said it ran out of space, so that one didnt work. I then found a video on youtube that showed you how to create a bootable drive.
That step resulted in the same error

Now when i try to erase the USB through Disk Utility it says that it can't, unmount the disk and Read the last block.
Any help would be much appreciated, Thanks in advance.