系统启动的时候，grub卡在倒数画面，不会自动倒数
需要手动确认才能进入
想了下grub一般不会出什么问题，90%问题在主板、cpu
重置bios后故障解决
查询资料，基本肯定错误原因
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It seems my problem is not with grub but with my motherboard. I noticed in the bios my CMOS clock no longer works. I do not believe it is a bad battery as the one I have reads 3v.
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If that is a CR2032 that's getting low. New ones are about 3.22 volts. If you measured it without a load, then it is likely to be even lower in circuit. I would suggest it is worth getting a new one (they are cheap) - removing the old one and change the jumper and back again to reset the BIOS. Then wait at least one hour before installing the new one. (Yes, I have had a few stubborn cases where this too was necessary). After that, power on and configure the BIOS. In my experience, the clock stopping is usually the first thing in the BIOS to fail, as the battery goes down, and indicate something is wrong. You can then be sure whether the battery was, or was not, responsible for your clock problems.
纽扣电池电量过低导致bios时钟错误，grub需要用到bios时钟导致无法倒数
重置bios，更换电池。
反正我重置bios以后么问题了...........手头没电池懒的换了.
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