If you select
Legacy BIOS Boot Mode (not marked UEFI in the boot menu).
- If your hard drive is blank, the Windows setup program creates the following partitions on your hard drive (see screenshot below).
Partition table:
- MBR (Master Boot Record)
Two partitions:
- System Reserved - The Boot Configuration Data (BCD).
- Primary - Where Windows is to be installed to.
If you select
UEFI Boot Mode (marked UEFI in the boot menu).
- If your hard drive is blank, the Windows setup program creates the following partitions on your hard drive (see screenshot below).
Partition table:
- GPT (GUID Partition Table)
Four partitions:
- Recovery - The Windows Recovery Environment tools. This partition does not exist in Windows 7.
- System (EFI system) - The Boot Configuration Data (BCD).
- MSR (Reserved) - Microsoft Reserved.
- Primary - Where Windows is to be installed to.
Note: The MSR (Reserved) partition is not visible within Disk Management utility, but it is listed with command line utility (diskpart).