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Old 03-27-2015, 01:51 AM   #1
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Registered: Mar 2015
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Question dual boot windows7 with with centos7

hiiii all

I had installed Windows 7 on /dev/sda1 and /dev/sda2 and then I installed Centos 7.
Since then I cant find Windows entry in the Grub.
And i had tried to use all kind of solution found on the net I still cant see any entry.
I had edited 40_custom script adding:

cat <<EOF
menuentry "windows 7" {
insmod part_msdos
insmod ntfs
set root='hd0,msdos1'
search --no-floppy --fs-uuid --set=root FCDAE998DAE95006
chainloader +1

then this command grub2-mkconfig -o /boot/grub2/grub2.cfg

[root@localhost]# grub2-mkconfig -o /boot/grub2/grub2.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-123.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-123.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-93890f189dec4b309c004fdce969ca5a
Found initrd image: /boot/initramfs-0-rescue-93890f189dec4b309c004fdce969ca5a.img

then this
[root@localhost]# tail -10 /boot/grub2/grub.cfg
# 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;
### END /etc/grub.d/41_custom ###

Still cant find windows in grub
please help me with this guys
Old 03-27-2015, 01:21 PM   #2
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Can you boot to windows 7 from grub command line? Or your trouble is that no menuentry for Windows 7 is present in grub menu at boot?
Old 03-27-2015, 04:23 PM   #3
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YOur grub2-mkconfig command did not show any output for windows. Were you eve able to boot windows after the CentOS install? Open a terminal and as root run the command: fdisk -l(Lower Case Letter L in the command) and post the output here?
Old 04-03-2015, 02:09 AM   #4
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Thanks for your reply brothers
i had formatted HDD installed windows again and did the same procedure its working fine now


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