单项选择题
A.chpv -c
B.rmlv hd5
C.bosboot -ad
D.rmdev -dl hd5
单项选择题 Asystemadministratorhasdeterminedarootmirroreddisk，hdisk1，needstobereplaced.Therootvolumehasbeenunmirrored.Whatisthenextsteptoremovethediskdrive？（）
单项选择题 Followingasystemboot，thedisplayindicatesthatpreviouslydetectedhardwareismissing.Whatcommandshouldbeusedtoidentifythemissinghardware？（）
单项选择题 Asystem’sbackupsarefailing.Errorloganalysisindicatesthatthereiseitherahardwareormediaproblem.Whichcommandisusedtodetermineifthereisahardwareproblemwiththetapedrive？（）