[root@localhost ~]# lvremove /dev/mapper/VolGroup-lv_home Logical volume "lv_home" successfully removed [root@localhost ~]# lvdisplay
2、从vg中移除pv
[root@localhost ~]# vgreduce VolGroup /dev/sdb1 Removed "/dev/sdb1" from volume group "VolGroup" [root@localhost ~]# vgdisplay
3、删除pv
[root@localhost ~]# pvremove /dev/sdb1 Labels on physical volume "/dev/sdb1" successfully wiped [root@localhost ~]# pvdisplay
4、根据硬盘大小，使用不同命令删除分区
[root@localhost ~]# parted /dev/sdb 或者 [root@localhost ~]# fdisk /dev/sdb
5、干掉/etc/fatab里面这个硬盘的内容
原文：http://blog.51cto.com/net881004/2156100