单项选择题DuringrebootthesystemhangswithanLED0554messagethatmeans, Thebootdevicecouldnotbeopenedorareadfailed. Whatrecoveryproceduresshouldbetaken?()
A.Boot in maintenance and use fsck to check hd5.
B.Boot in maintenance mode, access the rootvg and check the /etc/inittab for corruption.
C.Boot in maintenance mode, access the rootvg and rebuild the boot image using the bosboot command.
D.Boot in maintenance mode, access the rootvg and use the bootlist command to create a valid boot list.