Does Windows 7 support the need UEFI replacement for BIOS? If yes, does\nthis require 64-bit Windows 7? Does it require the system partition and\nboot partition to both be on a GPT disk?\n\nI have a Windows 7 Ultimate 64-bit boot partition working on an old Dell\ncomputer. That computer's BIOS says nothing about UEFI. When I try to\ncopy over the image of the system partition and boot partition to a a Dell\nT7600 system - which DOES offer UEFI boot devices as an option - and try to\nboot in legacy mode, I get a message that I am trying to boot a UEFI device\nin legacy mode. Unfortunately, that device does NOT show up in the list of\nboot devices. When I select the device 0 on the boot controller, I get a\nmessage that the partition cannot be booted (without any details).\n\nIf I go into the Dell T7600 setup and configure it to use UEFI, that is more\nconfusion. If I try to add a UEFI device, it tells me "No file system".\nIf I simply enable UEFI without adding a boot device, it finds nothing on\nstartup.\n\nSo at the end of the day, I have an exact image copy of a bootable WIndows 7\n64-bit OS, and I cannot get it to boot in either legacy mode or in UEFI\nmode. Since I have no experience with UEFI, I am just lost here.\n\nP.S., I was copying over the Windows disk image just to bootstrap install\nprocess, and I was going to relicense the OS once it booted.