I tried to boot from a usb memory to install Windows 10 on another drive but as it needed UEFI it did not work. 2009 PC, (as-old-as) has no UEFI, so it's easy. How to install on a 10tb slave drive? I read: Windows 10 installs in the way that the USB flash drive is booted into. Boot into the USB flash drive using legacy BIOS (or CSM mode) and Windows 10 will format the disk as MBR and install in legacy BIOS mode. I used Rufus, how to make it work on Dell T3500. Weiterlesen...