Colif :
You should have been able to use the Media Creation tool to make a USB, and it would have formatted the USB for you.
I thought about suggesting USB. But sometimes its just as hard to boot off as DVD.
You should have been able to set the DVD as 1st boot option in BIOS and just tapped enter after the boot window to get it to use DVD. I used DVD to install Win 10 last time on my PC as my motherboard doesn't boot off USB as easily, the dvd was just an easier choice. I still have it set as 1st device in bios for next time.
I only had a extra DVD-RW disc laying around to use for the iso but it wasnt booting from the disc, it was a bit scratched i figure maybe that was why.
So then I tried using windows media creation tool to make a bootable USB stick but the MCT wouldn't recognize my usb stick. So I downloaded iso and used rufus to make it bootable.
Which finally worked. But the windows 10 installer would still give me an error of "windows cannot be installed on Disc 2 partition 0 it is of the GPT type"
The HDD was freshley formated to GPT. I tried changing it back to MBR (but then my partition size was limited to only 2TB.)
And it worked, the installer started to install to the HDD but I cancled it because I wanted it to work with the GPT type of partition.
So I had an idea that maybe I forgot something with using RUFUS and went back and remade the iso but made sure to change the option to 'GTP' instead of 'Auto MBR or GTP'
But then after that, my pc refused to boot from the Flashdrive at all.
Even after also changing the bios setting from 'Auto' to 'EFI'.
So I just said screw it and started over. Using partition wizard to clone again the 1tb HDD to the 3tb HDD(while it was still MBR)
Then using partition wizard converted it to GPT and then extended the 'C' drive size all the way up to use the full 3TB.
It still wont boot to the HDD, but some how magically the Verifying DMI Data Pool doesn't hang anymore from a cold boot. (It still does if I try to boot from the 3tb)
It will finally boot straight into my ssd without hanging or having to press F12 to boot from SSD.
I can no longer access the windows 10 install on the new drive but atleast it boots straight into my desktop (Win 7 SSD) and I can still access all my old files just as they were with the new space (now my 3tb hdd is just an unbootable 3tb data drive) And I now have a handy windows 10 install ready on my flash drive if I ever decide to put it on my SSD. So I am satisfied, Sorry for the long read i just wanted to try to explain it well. Thank you again for your help.