1、开机时按键盘上的F2或是DEL进入硬盘的BIOS设置主界面,然后键盘移动光标到“Boot”选项卡
![](https://iknow-pic.cdn.bcebos.com/0b55b319ebc4b7453773f97ac1fc1e178b8215f2?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、进入Boot窗口后,可以看到Removable Devices目前不在第一行的位置。(不同的主板,USB的方式可能会不一样哦,大家需要注意查找)
![](https://iknow-pic.cdn.bcebos.com/37d3d539b6003af3e977920c3b2ac65c1138b689?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、用键盘选中Removable Devices上面的一项,然后按下键盘上的-按钮
![](https://iknow-pic.cdn.bcebos.com/7e3e6709c93d70cf0d34e461f6dcd100bba12b8b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、这时可以看到Removable Devices移动了第二项,同样的方法,我们再移到第一行,再按-符号。
![](https://iknow-pic.cdn.bcebos.com/d439b6003af33a873da64e76c85c10385243b597?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、可以看到现在Removable Devices已被修改为第一行的位置了,这就是第一启动顺序。
![](https://iknow-pic.cdn.bcebos.com/a71ea8d3fd1f4134bd2e4c122b1f95cad1c85e44?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)