swap in the press to start the computer the computer to log on to the desktop, complete the boot, a complete of various phases via the subsequent:
1. Pre-boot (Pre-Boot) stage;
2. boot stage;
three. loadable kernel stage;
4. initializes the kernel stage;
5. landing.
detailed description of each and every start-up
a) pre-boot stage
press the computer power to make the personal computer starts, and Windows XP Skilled running system Just before beginning this time, we call pre-boot (Pre-Boot) stage, at this stage, the pc 1st runs Power On Self Check (Submit), Submit test the system's total memory along with other hardware equipment, the position quo. If your personal computer system BIOS (basic input / output program) is really a plug and play, then the pc hardware might be examined, and total the configuration. The computer's fundamental input / output program (BIOS) positioning the computer's boot gadget, and MBR (Grasp Boot Record) is loaded and operate. Within the pre-boot phase, the pc to load Windows XP's NTLDR file.
b) boot stage
Windows XP Expert boot stage consists of four little stage.
Initial of all, the personal computer needs to go by way of the original boot loader stage (Preliminary Boot Loader), at this stage, NTLDR personal computer microprocessors from actual mode to 32-bit flat memory design. In real mode, the system is MS-DOS reserved 640kb of memory, and also the remaining memory as prolonged memory, and within the 32-bit flat memory mode, the system (Windows XP Skilled), as all memory is on the market memory. Next, NTLDR begins the built-in mini-file program drivers, by means of the actions to NTLDR to determine each and every file program with NTFS or Excess fat formatted partitions, to be able to discover and load Windows XP Professional, here, in addition the preliminary boot Uploader stage is over.
then the system came towards the operating system selection phase, in the event the pc has extra than one running system (that is, multi-system), and boot.ini is about properly select the system under the circumstances with the running system, computer screens operating program will display a menu, which is the result of NTLDR reads the boot.ini. (As for your operating system menu, not because of short-term circumstances, cannot capture, however the writer simulated a)
inside the boot.ini, primarily contain the following:
[boot loader]
timeout = 30
default = multi (0) disk (0) rdisk (0) partition (one) WINDOWS
[operating systems]
multi (0) disk (0) rdisk (0) partition (1) WINDOWS = ) partition (2) WINNT = NTLDR will be the Windows XP Expert from here to obtain the location of program files. (* This post doesn't clarify in more detail the boot.ini from the construction, mainly because it's small to complete using the topic, if you would like to know, can visit some specialized internet sites in the query data.) If only one operating in the boot.ini system solutions, or the timeout worth is about to 0, the program doesn't seem the operating system choice menu, straight into the system or only the default system. Inside the option of beginning Windows XP Expert, the running system choice phase is finished, the hardware detection stage begins.
the hardware detection stage, ntdetect.com will gather info about laptop or computer hardware checklist as well as the listing again to the NTLDR, this was accomplished to facilitate later additional to these hardware details hardware within the registry under HKEY_LOCAL_MACHINE.
hardware detection is complete, enter the configuration possibilities stage. When the computer contains multiple hardware profiles list, you are able to press the down button to pick. If only one hardware profile, the laptop or computer screen does not clearly show this straight using the default configuration file to load Windows XP Expert.
the finish with the boot stage. In the boot stage,
Windows 7 Activation, the program use to file a total of: NTLDR, Boot.ini, ntdetect.com, ntokrnl.exe, Ntbootdd.sys, bootsect.dos (optional).
c) load the kernel stage
loading the kernel stage, ntldr load the kernel as Windows XP ntokrnl.exe. Program loaded Win
Windows 7 Activation Overview of Windows XP system
Linear Mode
