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單項選擇題

An administrator has mirrored the root volume group to a second disk, but ’bootlist’ is failing to correctly add the second disk.  What is the likely cause of the problem?()  

A.The administrator has failed to run ’bosboot -ad <2nd disk>’ prior to the bootlist command.
B.The administrator has failed to run ’bootinfo -B <2nd disk>’ prior to the bootlist command.
C.The administrator has failed to run ’mirrorvg -m rootvg <2nd disk>’ prior to the bootlist command.
D.The administrator has failed to run ’bosboot -ad /dev/ipldevice <2nd disk>’ prior to the bootlist command.

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