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移除多余的boot选项
July 9, 2018

如果你的主板启用了secure boot，并且你使用了EFI的方式来加载启动项，那重装系统后在bios里会看到两条一模一样的启动选项，洁癖症患者不能忍。
方法如下：


sudo efibootmgr -v

输出


BootCurrent: 0001
Timeout: 2 seconds
BootOrder: 0001,0000,2001,2002,2003
Boot0000* ubuntu        HD(1,GPT,ebd088db-117f-435a-80a3-9cd8b25c2415,0x800,0x17800)/File(\EFI\ubuntu\grubx64.efi)
Boot0001* ubuntu        HD(1,GPT,ebd088db-117f-435a-80a3-9cd8b25c2415,0x800,0x17800)/File(\EFI\ubuntu\shimx64.efi)RC
Boot2001* EFI USB Device        RC
Boot2002* EFI DVD/CDROM RC
Boot2003* EFI Network   RC

每个启动项编号为八进制数
删除多余的


efibootmgr -b 0000 -B

更多用法请参考 efibootmgr --help

参考：
https://forums.linuxmint.com/viewtopic.php?t=119292
https://askubuntu.com/questions/840602/double-ubuntu-entry-in-bios-boot-options

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