单项选择题

YouhaveacomputerthatrunsWindowsXP.Thecomputerhasonebasicdiskthatcontainsasingle partition.Thepartitionhas30GBoffreespace.Theharddiskhas5GBofunallocatedspace.YouneedtoinstallWindows7inadual-bootconfiguration.Windows7mustnotbeinstalledinavirtualharddisk(VHD).Whatshouldyoudofirst?()

A.Createasecondpartition.
B.Shrinktheprimarypartition.
C.ConverttheharddisktoaGPTdisk.
D.Converttheharddisktoadynamicdisk.

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