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系统开机的过程中出现错误 ，类似于
a start job if running for file sys …(1min,30s)
1.原因分析
使用命令：free -m
可看到swap的total和free为0，即swap分区丢失了
2.解决方法
添加swap分区即可
1）生成swapfile文件
执行：dd if=/dev/zero of=swapfile bs=1024 count=4194304
swapfile为文件名，自定义，count为swap分区的大小，count=1024*1024*4
生成的文件在执行命令的目录下；
2）swap格式化
sudo mkswap /srv/swapfile
这里的swapfile为上面生成的文件，应根据具体生成的位置写
查看文件使用情况:
swapon -s
3）设置开机自动启用swapfile
方法一：
sudo gedit /etc/rc.local
添加：
swapon /srv/swapfile
方法二：
sudo gedit /etc/rc.local
修改为：
swap was on /dev/sda4 during installation
/srv/swapfile swap swap defaults 0 0
4）重启后验证
free -m版权属于: 三三世界-百宝箱
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本文最后更新于2021年11月21日 ，已超过909天没有更新，若内容或图片失效，请留言反馈。
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你好提示Permission denied 怎么办啊