windows7相关故障处理（Related troubleshooting windows7）.docVIP

windows7相关故障处理（Related troubleshooting windows7） Let us look at the startup process of windows7 knowledge: Computer power, start the BIOS program, BIOS after self inspection, find the MBR master boot record on the hard disk, MBR read DPT (partition table), the main activities in the area to find out, and then read the main partition of PBR (partition boot record, also called DBR, which is why the network. On the controversy, we call it PBR), then PBR search startup manager file partition in BOOTMGR, in BOOTMGR is found, control was handed to the BOOTMGR. BOOTMGR (BCD=Boot Configuration Data \boot\bcd file to read That is, the boot configuration data, said simply, the boot.ini file is equivalent to XP windwows7 under the BCD file), if there are multiple operating system and operating system waiting time is not 0, then will be displayed on the display interface of the operating system of choice. We choose to start WINDOWS7, BOOTMGR will go to the boot disk to find WINDOWS\system32\winload.exe, and then through the winload.exe loading windows7 kernel, thus starting the whole windows7 system. The process can be summarized as follows: BIOS--MBR--DPT--pbr-- Bootmgr--bcd--Winload.exe-- kernel to load the entire windows7 system -- Troubleshooting this section may appear in this paper say MBR--DPT--pbr-- Bootmgr--bcd. MBR problems, mainly because of the different MBR code to be rewritten, rewritten code, so the error information is different. For example, we installed windows7 and Ubuntu dual system, Ubuntu changed the MBR, we put in the format Ubuntu partition, which can not enter the windows7, but also can not enter the Ubuntu boot time will appear in figure error: The map. The solution is to rewrite mbr. To override MBR, known as fdisk is in DOS using /mbr command override. MBR XP and fdisk /mbr rewriting is compatible with windows7, however, is not so compatible. Practice shows that using the fdisk /mbr command overrides windows7 MBR, need to rebuild BCD, otherwise does