CentOS GRUB2 修改開機預設
1.Switch to root and show options at booting
$ su -
$ awk -F\' '$1=="menuentry" {print $i++" : " $2}' /etc/grub2-efi.cfg
or
$ grep "^menuentry" /etc/grub2-efi.cfg | cut -d "'" -f2
(figure 1)
2. check saved entry at /etc/grub2.cfg
$ grub2-editenv list
3. set default, the first index is 0, if you want to change to second core
$ grub2-set-default 1
參考資料
https://wiki.centos.org/zh-tw/HowTos/Grub2
$ su -
$ awk -F\' '$1=="menuentry" {print $i++" : " $2}' /etc/grub2-efi.cfg
or
$ grep "^menuentry" /etc/grub2-efi.cfg | cut -d "'" -f2
(figure 1)
2. check saved entry at /etc/grub2.cfg
$ grub2-editenv list
3. set default, the first index is 0, if you want to change to second core
$ grub2-set-default 1
參考資料
https://wiki.centos.org/zh-tw/HowTos/Grub2
