Important: UEFI accepts boot loaders only from a FAT32 formatted boot volume.
You will need a 4GB+ USB drive:
- Open elevated command prompt
- Run diskpart
- Enter list disk
Locate your USB drive number. Pay attention, identifying the wrong disk could wipe out your system.
- Enter select disk # (where # is the disk number of your USB drive from the list above)
- Enter these commands: (Everything on the disk will be deleted!)
- create partition primary
- select partition 1
- format quick fs=fat32
- Mount or extract the Windows 7 or 8 ISO
- Copy the contents from the ISO to the USB drive
- robocopy S:\\ D:\\ /e (S = the ISO drive or contents, D = the USB device)
- Enter the BIOS setup by pressing one of the F keys. (F2 is the most common, but F12 may work also)
- Disable Legacy BIOS ROMS support. (May also be “UEFI only” or similar option.
- Save BIOS and Exit, boot from your USB stick to start the installation.
- When selecting the drive and partition configuration in Setup, I find it best to use the Advanced Options and delete all existing HDD partitions on the destination drive.
Then click New and then Apply to automatically create the four (4) partitions needed for UEFI/GPT/Dynamic Disk operation.
After Windows is installed run MSINFO32.exe and check the “BIOS Mode” in the system summary. It will show either “UEFI” or “Legacy”. (If you followed these instruction then hope for “UEFI”.)