CentOS7修改开机顺序在笔记本电脑安装了win8与centOS7。按照以往的惯例，安装完centOS时，会在／boot／grub／grub.conf里自动加入安装系统前其它系统的引导控制，但是实际上是没有的。此文不探讨如何将先系统引导加入centOS7的/boot/grub2/grub.cfg当中。先查看我电脑上grub.cfg当中的内容如下（注意加粗内容）：[root@localhostgrub2]#catgrub.cfg#DONOTEDITTHISFILE##Itisautomaticallygeneratedbygrub2-mkconfigusingtemplates#from/etc/grub.dandsettingsfrom/etc/default/grub####BEGIN/etc/grub.d/00_header###setpager=1if[-s$prefix/grubenv];thenload_envfiif["${next_entry}"];thensetdefault="${next_entry}"setnext_entry=save_envnext_entrysetboot_once=trueelsesetdefault="${saved_entry}"fiif[x"${feature_menuentry_id}"=xy];thenmenuentry_id_option="--id"elsemenuentry_id_option=""fiexportmenuentry_id_optionif["${prev_saved_entry}"];thensetsaved_entry="${prev_saved_entry}"save_envsaved_entrysetprev_saved_entry=save_envprev_saved_entrysetboot_once=truefifunctionsavedefault{if[-z"${boot_once}"];thensaved_entry="${chosen}"save_envsaved_entryfi}functionload_video{if[x$feature_all_video_module=xy];theninsmodall_videoelseinsmodefi_gopinsmodefi_ugainsmodieee1275_fbinsmodvbeinsmodvgainsmodvideo_bochsinsmodvideo_cirrusfi}terminal_outputconsoleif[x$feature_timeout_style=xy];thensettimeout_style=menusettimeout=5#Fallbacknormaltimeoutcodeincasethetimeout_stylefeatureis#unavailable.elsesettimeout=5fi###END/etc/grub.d/00_header######Beginwithwindows8##########menuentry'CentOSLinux(3.10.0-123.13.2.el7.x86_64)7(Core)'--classcentos--classgnu-linux--classgnu--classos--unrestricted$menuentry_id_option'gnulinux-3.10.0-123.el7.x86_64-advanced-337b5933-c8eb-4c4e-8e7d-3a1f7aaa1e73'{load_videosetgfxpayload=keepinsmodgzioinsmodpart_msdosinsmodxfssetroot='hd0,msdos2'if[x$feature_platform_search_hint=xy];thensearch--no-floppy--fs-uuid--set=root--hint-bios=hd0,msdos2--hint-efi=hd0,msdos2--hint-baremetal=ahci0,msdos2--hint='hd0,msdos2'337b5933-c8eb-4c4e-8e7d-3a1f7aaa1e73elsesearch--no-floppy--fs-uuid--set=root337b5933-c8eb-4c4e-8e7d-3a1f7aaa1e73filinux16/boot/vmlinuz-3.10.0-123.13.2.el7.x86_64root=UUID=337b5933-c8eb-4c4e-8e7d-3a1f7aaa1e73rovconsole.keymap=usvconsole.font=latarcyrheb-sun16rhgbquietLANG=zh_CN.UTF-8initrd16/boot/initramfs-3.10.0-123.13.2.el7.x86_64.img}menuentry'Windows8(loader)(on/dev/sda1)'--classwindows--classor$menuentry_id_option'osprober-chain-140E68540E6830C2'{insmodpart_msdosinsmodntfssetroot='hd0,msdos1'chainloader+1}###BEGIN/etc/grub.d/10_linux###menuentry'CentOSLinux,withLinux3.10.0-123.el7.x86_64'--classcentos--classgnu-linux--classgnu--classos--unrestricted$menuentry_id_option'gnulinux-3.10.0-123.el7.x86_64-advanced-337b5933-c8eb-4c4e-8e7d-3a1f7aaa1e73'{load_videosetgfxpayload=keepinsmodgzioinsmodpart_msdosinsmodxfssetroot='hd0,msdos2'if[x$feature_platform_search_hint=xy];thensearch--no-floppy--fs-uuid--set=root--hint-bios=hd0,msdos2--hint-efi=hd0,msdos2--hint-baremetal=ahci0,msdos2--hint='hd0,msdos2'337b5933-c8eb-4c4e-8e7d-3a1f7aaa1e73elsesearch--no-floppy--fs-uuid--set=root337b5933-c8eb-4c4e-8e7d-3a1f7aaa1e73filinux16/boot/vmlinuz-3.10.0-123.el7.x86_64root=UUID=337b5933-c8eb-4c4e-8e7d-3a1f7aaa1e73rovconsole.keymap=usvconsole.font=latarcyrheb-sun16rhgbquietLANG=zh_CN.UTF-8initrd16/boot/initramfs-3.10.0-123.el7.x86_64.img}menuentry'CentOSLinux,withLinux0-rescue-96f17ff7113c494a98433dd3c1be3974'--classcentos--classg...
