What is pre sequences?

Answer 1

Preboot Sequence During startup, a Windows Server 2003-based computer initializes the boot portion of the hard disk and the

preboot sequence begins. This sequence consists of four steps:

• The computer runs power-on self test (POST) process to determine the amount of physical memory; and

• The hardware components are present.

• If the computer has a Plug and Play (BIOS), enumeration and configuration of hardware devices occurs.

• The computer BIOS locates the boot device and loads and runs the master boot record (MBR).

Note: Windows Server 2003 modifies the boot sector during installation so

that Ntldr loads during system startup. Therefore you should disable the

Boot Sector Virus Protection in your BIOS Setup.