制作好的U盘启动

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三、进入命令模式

启动这个界面之后，继续按CTRL D

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成功进入

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四、验证LVM并挂载

通过命令，验证LVM是否是完整的

vgs      #查看VG，输出应该是有VG PVE
lvs      #查看LV，可以看到 data root
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vgchange -a y    #激活VG
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挂载lvm

mount /dev/mapper/pve-root /mnt

chroot

chroot /mnt

五、使用命令修改密码

passwd root
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