The system partition must be marked active
A. marked active
Explanation:
To boot on bootmgr and load the operating system, first it should be formatted with fat32 or ntf32 and make it active the partition. Partition is made through windows disk manager from control panel or DISKPART tools which is available in operating system.
These tools are ready and handy which is available. When we make partition it will prompt for number GIGA BYTE OR MEGA BYTE size after end user input or select, next step to select disk format type such as FAT32 or NTFS.
Partition can be made at during installing operating system and made active (BOOTMGR).
