Samsung 850 EVO SATA SSD Boot drive Crystal benchmark Seagate Firecuda M.2 NVMe Boot drive Crystal benchmark, over an x4 PCIe 2.0 interface.

Let’s see all these fixes in detail. 1] Disable Secure Boot The most common reason why Legacy Boot is greyed out or why you are not able to switch from UEFI to Legacy is Secure Boot.

If you installed Windows onto the old SATA SSD with the motherboard set to UEFI mode, i.e. using a GPT instead of an MBR layout, you're golden. Any cloning utility should work.

This will simply be moved over. For the boot drive (and swap partition) I am looking to see if SCSI U320, SSD, or a new SATA drive will give me the read/write performance.