我在台式电脑上安装了Centos7和Windows,我的电脑最初启动成功。
但是最近我从 Windows 7 中删除了一个文件分区,该分区是我安装 Centos7 的,由于 Centos7 运行良好,所以我删除了它,现在我将空间合并到一个现有的 Windows 分区。
从那时起,每次我启动(或重新启动)计算机时都会收到以下错误消息:
error:unknown filesystem.
Entering resuce mode
grub resuce>
使用set
将获得以下消息:
>set
prefix=(hd0,msdos9)/boot/grub2
root=hd0,msdos9
现在我找到了问题的根源:msdos8应该改为msdos9,所以我输入了下面的代码:
>set prefix=(hd0,msdos8)/boot/grub2
>set root=hd0,msdos8
>insmod normal
>normal
完成此操作后,系统可以成功启动,我可以选择启动Windows还是Linux。
但问题是:如果我下次重新启动或启动计算机,我仍然会收到上述错误列表,并且我必须set
再次执行此操作。
我想知道是否有办法永久解决此问题,这样我就不需要set
每次都使用它来纠正它。提前谢谢!
我尝试过修改grub配置文件在下面/启动/grub2,但是没有效果,下面是我的grub.cfg文件的配置代码:
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub2-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
set pager=1
if [ -s $prefix/grubenv ]; then
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="${saved_entry}"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
terminal_output console
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=5
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/01_users ###
if [ -f ${prefix}/user.cfg ]; then
source ${prefix}/user.cfg
if [ -n "${GRUB2_PASSWORD}" ]; then
set superusers="root"
export superusers
password_pbkdf2 root ${GRUB2_PASSWORD}
fi
fi
### END /etc/grub.d/01_users ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'CentOS Linux 7' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-693.21.1.el7.x86_64-advanced-ec143453-515a-4bc9-b17b-6bd33f305e3a' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod xfs
set root='hd0,msdos8'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos8 --hint-efi=hd0,msdos8 --hint-baremetal=ahci0,msdos8 --hint='hd0,msdos8' 1f858d09-5ce8-435e-9aba-7f48c3100abe
else
search --no-floppy --fs-uuid --set=root 1f858d09-5ce8-435e-9aba-7f48c3100abe
fi
linux16 /vmlinuz-3.10.0-693.21.1.el7.x86_64 root=/dev/mapper/centos-root ro rd.lvm.lv=centos/swap vconsole.keymap=us rd.lvm.lv=centos/usr crashkernel=auto vconsole.font=latarcyrheb-sun16 rd.lvm.lv=centos/root rhgb quiet
initrd16 /initramfs-3.10.0-693.21.1.el7.x86_64.img
}
if [ "x$default" = 'CentOS Linux 7' ]; then default='Advanced options for CentOS Linux>CentOS Linux (3.10.0-693.21.1.el7.x86_64) 7 (Core)'; fi;
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_ppc_terminfo ###
### END /etc/grub.d/20_ppc_terminfo ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows 7' --class windows --class os $menuentry_id_option 'osprober-chain-C4DC2ACFDC2ABB94' {
insmod part_msdos
insmod ntfs
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1' C4DC2ACFDC2ABB94
else
search --no-floppy --fs-uuid --set=root C4DC2ACFDC2ABB94
fi
parttool ${root} hidden-
chainloader +1
}
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
答案1
最后我发现使用grub2-install
withroot
可以解决这个问题:
grub2-install /dev/sda