1.概述

有时断开一个连接时，会有以下报错：

  1. target is busy.
  2. (In some useful info about processes that use the device is found by lost(8) or fuser(1))

2.安装一个工具

  1. # 首先确认联网状态
  2. # -y 确认是否已经安装
  3. yum install -y psmisc

3.查看繁忙目标

  1. # 查看繁忙明天不iao
  2. fuser -mv /media
  4. # 强行关闭目标
  5. fuser -kv /media
  7. # 执行你的操作
  8. umount /dev/cdrom