But recently I have removed a file partition(the file partition is which I installed Centos) from Windows 7,since then each time when I boot(or reboot) my computer I will get the following error message:
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error:unknown filesystem.
Entering resuce mode
grub resuce>
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>set
prefix=(hd0,msdos9)/boot/grub2
root=hd0,msdos9
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>set prefix=(hd0,msdos8)/boot/grub2
>set root=hd0,msdos8
>insmod normal
>normal
But the problem is that:If I reboot or boot my computer next time,I will still get the error list above and I have to use set to do it again.
I want to know if there is a way to fix this issue permanently?
I have tried to modify grub.cfg under /boot/grub2,but it didn't work(also tried use grub2-mkconfig to generate a new file),below is the configuration code of my grub.cfg file:
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#
# 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 ###