About a few weeks back i bought a SSD it is a 512GB and i did a clean installl of Windows 8.1 Pro 64bit on it.
Recently i noticed my BIOS Mode is UEFI. Before this upgrade to the SSD i had a 2 WD 1TB HDD and it was in Legacy Mode then.
I know i made no changes to my BIOS, before or during this upgrade to the SSD.
Just wondering what made this automatically do this, change to UEFI.
I know the BIOS shows EFI, when accessing it.
If i go into the BIOS my boot order is UEFI BOOT MANAGER, Crucual SSD, External HDD and then DVD Drive.
Somone else told me this.
If your BIOS is set to work for both: UEFI+MBR then you can install in either style.
When you did a fresh install. From the Installation disk, you have the choice to install using GPT style or MBR style and apparently you selected GPT style.
I attached an image from Disk Management that shows 3 partitions, usually only 2 for Windows 8.1, one for recovery one primary.
What i want to know is, that it is o.k. to leave it this way or not, most benefits for this is faster boots, secure boot (which mine does not support) HDD over 2TB.
Although from the screen image it does noy say the type is GPT,as another person told me it would be.
This is something i read about Windows detecting UEFI, possibly doing a GPT style later. Similar to how i did mine with just a DVD of Win8.1, but mine was originally set to Legacy mode.
To wipe and convert the drive by using Windows Setup
Turn off the PC, and put in the Windows installation DVD or USB key.
Boot the PC to the DVD or USB key in UEFI mode.
When choosing an installation type, select Custom.
On the Where do you want to install Windows? screen, select each of the partitions on the drive, and select Delete. The drive will show a single area of unallocated space.
Select the unallocated space and click Next. Windows detects that the PC was booted into UEFI mode, and reformats the drive using the GPT drive format, and begins the installation.
This obviously explains PC need to be in this Mode i believe before the clean install to become UEFI .