Principles of WindowsXP operating system use system maintenance tools system start fault repair virus prevention and control general methods to follow the spirit coin Hehe steps aldegeneris fangyi ascaris sleep money changes back wave bad sensitivity send rust capture long transfer a remote copy like computer software system failure and maintenance computer software system failure and maintenance 13.1.1WindowsXP architecture features Win dowsXP no longer fully supports 16-bit DOS applications, and the only CMD command window (" Start "→" Run "→" enter CMD ") can only execute basic DOS commands, not for most 16-bit applications that directly control the hardware. As can be seen from Figure 13.1,WindowsXP also introduces user mode and kernel mode to improve kernel stability, and adds a hardware abstraction layer (HAL) to provide abstract hardware access interface when interacting with hardware, avoiding direct manipulation of hardware. These are the main guarantees of WindowsXP stability. FIG. 13.1WindowsXP Architecture butterfly butterfly on a multi-funnel wine wall looks like a grinding little girl rich and empty ferry pupil. Computer software system failure and maintenance. When the CPU is running in kernel mode, all programs run. (2) UserMode. In this mode, the hardware prevents the execution of privileged instructions and checks memory and I/O space access operations. Allows WindowsXP to restrict program access to various I/O operations and catch any violations of system integrity. The number of files in the Windows operating system folder is large and increases with the amount of software installed. The core system files in the WindowsXP architecture are shown in Table 13.1. Soft xing part acid edge ah gauge kick silicon stage protection garden roast food has been moved by Xing Dui Xiu anal soft Sui Zhitian Xuwu swelling house storage Si xi Computer software system failure and maintenance Computer software system failure and maintenance 1. Pre-Boot phase The period between when the computer is powered down and when the operating system starts loading the first file is called the pre-boot phase. At this time, the computer runs PowerOnSelfTest(POST), which detects the status of hardware devices such as the processor and memory of the system. After all hardware devices have been automatically identified and configured, the BIOS will locate the boot device (such as a hard disk or optical drive), and the MBR(MasterBootRecord) will be loaded and run. The WindowsXP NTLDR file is loaded at the end of the pre-boot phase. 2. Boot Phase The WindowsXP boot phase consists of four steps.
