Linux common emergency treatment 1. The use of emergency safeguard disk Group Emergency disk (also known as boot/root disc), is an indispensable tool for system administrators. It can be used to launch and operation of an independent Complete Linux system. In fact, the site where the group's No. 2, there is a complete disk Zhang Linux system, including the root system documentation Manpower; Section 1 for disk storage will be launched by the kernel. The maintenance system is very simple to use emergency disk. It started with only two disk system into emergency mode, then use the root account. In order to be able to visit the hard disk and require manual installation of hard disk file system. For example, I used the following order catalog can be installed in /mnt Ext2fs /dev/hda2 disk on the Linux file system types : # Monut t ext2/dev/hda2/mnt Note : The list is now root where the root disk catalog. Hard Disk File System to visit the documents to be stored on it to install a catalog Under. Thus, if a hard disk installed in /mmt catalog file system, disk and the path is the original document /etc/passwd /mnt/etc/passwd. 2, the paper handling system is damaged Document system is damaged, if we use the ext2fs types of documents, we can order from the diskette to amend the document is transported e2fsck Commission were damaged data. For other types of documents can be used, the corresponding fsck orders. When the inspection of documents from the diskette, it is best not to mount installation. Note : The file system is a common cause of the destruction of the super block were damaged, the paper is the super block "head." It includes File System Status, free disk block size and other information. If damage to the super block a document (such as careless wrote directly to the data File System zoning super block), then the system could not document identification system, it will be installed, even if E2fsck orders can adopt to address the problem. However, the types of documents will ext2fs super block as a backup and storage procedures in the drive block (block group) border. E2fsck use of the following orders can be used to inform the backup super block # E2fsck-b 8193 File System is located in the district-b option for 8193 that the use of documents stored in the 8193 block of the super-block backup data. [ Closed window ]