AIX0557 is abnormal and cannot be started

AIX0557 exception, the system cannot be started to solve the problem description, there is a test server AIX restarted, and then cannot start from the LED light, the display 0557: rootmntfailed; search online, solution: 1) start the installation disc and enter Maintenance... AIX 0557 exception, the system cannot start to solve the problem description, there is a test server AIX restart, and then cannot start from the LED light, the display is 0557: root mnt failed; after searching online, the solution is as follows: 1) start with the installation disc, select 3 "3 -- Start Maintenance Mode for System Recovery" --> "Access a Root Volume Group" --> "Access this volume group and start a shell before mounting the file Systems "2) format file system logs (jfslog) #/usr/sbin/logform/dev/hd8 3) check and fix the file system # fsck-y/dev/hd1 (/home File System) # fsck-y/dev/hd2 (/usr file system) # fsck-y/dev/hd3 (/tmp file system) # fsck-y/dev/hd4 (/file system) # fsck-y/dev/hd9var (/var file system) exit with the exit command, and the file system will automatically mount it. Result: mount/dev/hd4 error: Unformatted or incompatible media 4) rebuild bootimage # lslv-m hd5 to find the hard disk where bootimage is located, for example, hdisk0 # bosboot-ad/dev/hdisk0 # bootlist-m normal/dev/hdisk0. Restart the system # shutdown-Fr and the system becomes normal.