Updating boot support partition for the volume as required
Why would you want to disable or turn off the Windows Boot Manager?
Simply put, it can unnecessarily slow down the boot process as it waits to ask you which operating system to boot.
Windows Boot Manager (BOOTMGR) is a small piece of software, called a boot manager, that's loaded from the volume boot code, which is part of the volume boot record.
BOOTMGR helps your Windows 10, Windows 8, Windows 7, or Windows Vista operating system start.
What advantages does GUID Partition Table (GPT), a new format of table partitioning on a hard drive, give?
GPT allows to circumvent a number of restrictions of the classic MBR Partition Table.
But this mode can be used only to install 64-bit Windows versions, and the whole procedure is quite complicated as already mentioned.Today let’s dwell on how to install any modern Windows version (including Windows 7 and Windows 8) to a GPT hard disk on a PC using BIOS firmware (without UEFI support).The necessity to pull such trick arised when trying to install Windows Server 2008 R2 to HP DL380 G8 server (HP DL servers do not support EFI yet) with the size of the local array (RAID 5) over 4 TB.Let’s highlight the major points According to the official Microsoft documentation all its OSs starting from Windows Server 2003 SP1 support GPT volumes as the data disks.However, only 64-bit Windows versions installed on the UEFI motherboards are able to boot from a GPT volume. There are several hacks that allow to boot Windows 7/8 x64 in BIOS firmware from a GPT disk.