How do I install Windows 10 from USB to a UEFI Secure Boot Machine

With a new bare Machine how do I install Windows 10 from a USB stick and install it with secure boot and EFI turned on?

Answer

1. First make sure your bios has secure boot turned on.


2. Next, build your USB stick with Fat32


3. Then install normally.

The 11 steps for manually preparing / building a USB Disk to be a bootable Win 10 Install. This bootable USB stick will work for both older BIOS installs as well as the newer UEFI installs.

1. Diskpart (Run from a CMD prompt)


2. List Disk


3. Select Disk # (Where # is the number of your USB disk)


4. Clean (removes any partitions on the USB disk, including any hidden sectors)


5. Create Partition Primary (Creates a new primary partition with default parameters)


6. Select Partition 1 (Focus on the newly created partition)


7. Active (Sets the selected partition to an active valid system partition state)


8. Format FS=fat32 quick (Formats the partition with the FAT32 file system. FAT32 is needed instead of NTFS so that it can load under the secure boot UEFI BIOS.)


9. Assign (Assigns the USB drive a drive letter)


10. Exit


11. Copy all the files from the Windows 10 isO to the USB Stick.

For more details see my blog post at: http://mythoughtsonit.com/2014/05/installing-windows-8-1-from-usb-to-a-uefi-secure-boot-machine/