参考链接:http://www.jb51.net/os/RedHat/1051.html


umount /home       

umount: /home: device is busy.   #显示磁盘忙碌

        (In some cases useful info about processes that use

         the device is found by lsof(8) or fuser(1))


fuser -m -v /home   #查看那个进程在使用硬盘

                     USER        PID ACCESS COMMAND

/home:               root     kernel mount /home

                     root      24135 ..c.. bash

kill -9 24135

umount /home     #卸载成功