单项选择题Duringreboot,thesystemhangswithanLED0554messagethatmeans, Thebootdevicecouldnotbeopenedorareadfailed. Whichofthefollowingrecoveryproceduresshouldbetaken()
A.Boot in maintenance mode 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, and reset the root password.