[CentOS] installing C7 on a laptop with Win7, dual boot

Mon Mar 2 01:06:26 UTC 2015
Fred Smith <fredex at fcshome.stoneham.ma.us>

Hi all!

I've just installed C7 on my netbook that already contained Win7 (and
also Fedora 19, which the C7 is intended to replace). The Fedora installer
had found the windows installation and it appeared in the grub menu,
and was bootable and worked fine.

The C7 installer did not put the windows installation into the grub
menu.

with some googling I found a page at https://priteshugrankar.wordpress.com/2014/09/12/dual-booting-centos-7-and-windows-7/ that gives a simple recipe for
fixing this problem. basically:

cp /boot/grub2/grub.cfg orig.grub.cfg
grub2-mkconfig -o /boot/grub2/grub.cfg

with (on his system) the second command above producing this output:

	[root at localhost ~]# grub2-mkconfig -o /boot/grub2/grub.cfg
	Generating grub configuration file ...
	Found linux image: /boot/vmlinuz-3.16.2-1.el7.elrepo.x86_64
	Found initrd image: /boot/initramfs-3.16.2-1.el7.elrepo.x86_64.img
	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-3.10.0-123.6.3.el7.x86_64
	Found initrd image: /boot/initramfs-3.10.0-123.6.3.el7.x86_64.img
	Found linux image: /boot/vmlinuz-0-rescue-327fe33f3b364802871211321a2790b7
	Found initrd image: /boot/initramfs-0-rescue-327fe33f3b364802871211321a2790b7.img
	Found Windows 7 (loader) on /dev/sda1
	Found Windows 7 (loader) on /dev/sda2
	done

Unfortunately, when I did it, I got this:

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-3.10.0-123.20.1.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-123.20.1.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-c875112952114f6284f69abaa4f9a2f7
Found initrd image: /boot/initramfs-0-rescue-c875112952114f6284f69abaa4f9a2f7.img
done

No mention of the windows installation.

It's not that I use the win7 installation much, but I do want to be able
to do so when one of those rare occasions pops up.

Thanks in advance!

Fred

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us -----------------------------
    "Not everyone who says to me, 'Lord, Lord,' will enter the kingdom of
     heaven, but only he who does the will of my Father who is in heaven."
------------------------------ Matthew 7:21 (niv) -----------------------------