I have RHEL 7 Beta installed in dual boot with CentOS 6.x. Since RHEL 7 installed GRUB2, I had problem that RHEL 7 is default boot.
My personal solution was to go to /etc/grub.d and run command: mv 10_linux 31_linux
grub2-mkconfig -o /boot/grub2/grub.cfg
Explanation:
- /etc/grub.d is where grub2 writes down config files used to create boot menu. - OS-prober creates 30_os-prober file in /etc/grub.d - 10_linux is created for RHEL/CentOS 7.x system installed.
If you change order of files in /etc/grub.d (numbers at the start of the files) the list generated with grub2-mkconfig will change order in the GRUB2 menu :)
Fedora/RHEL 7.x have a changed GRUB2 so for further reading read:
5.3 Multi-boot manual config: http://www.gnu.org/software/grub/manual/grub.html#Multi_002dboot-manual-conf...
and
Fedora GRUB Wiki: http://fedoraproject.org/wiki/GRUB_2
On 22.03.2014 17:46, Ljubomir Ljubojevic wrote:
I have RHEL 7 Beta installed in dual boot with CentOS 6.x. Since RHEL 7 installed GRUB2, I had problem that RHEL 7 is default boot.
My personal solution was to go to /etc/grub.d and run command: mv 10_linux 31_linux
grub2-mkconfig -o /boot/grub2/grub.cfg
Explanation:
- /etc/grub.d is where grub2 writes down config files used to create
boot menu.
- OS-prober creates 30_os-prober file in /etc/grub.d
- 10_linux is created for RHEL/CentOS 7.x system installed.
If you change order of files in /etc/grub.d (numbers at the start of the files) the list generated with grub2-mkconfig will change order in the GRUB2 menu :)
Oh boy, I'm so going to miss Grub 0.97.. Thanks for sharing, though!
On Sun, Mar 23, 2014 at 1:39 PM, Nux! nux@li.nux.ro wrote:
On 22.03.2014 17:46, Ljubomir Ljubojevic wrote:
I have RHEL 7 Beta installed in dual boot with CentOS 6.x. Since RHEL 7 installed GRUB2, I had problem that RHEL 7 is default boot.
My personal solution was to go to /etc/grub.d and run command: mv 10_linux 31_linux
grub2-mkconfig -o /boot/grub2/grub.cfg
Explanation:
- /etc/grub.d is where grub2 writes down config files used to create
boot menu.
- OS-prober creates 30_os-prober file in /etc/grub.d
- 10_linux is created for RHEL/CentOS 7.x system installed.
If you change order of files in /etc/grub.d (numbers at the start of the files) the list generated with grub2-mkconfig will change order in the GRUB2 menu :)
Oh boy, I'm so going to miss Grub 0.97.. Thanks for sharing, though!
That method of ordering configuration files has been around for decades, so nothing new there. (eg /etc/init.d).
However I do find grub2's configuration a little confusing. Nothing new there. It'll sink in sometime, no doubt.
Cheers,
Cliff
-
Cliff Pratt -
Ljubomir Ljubojevic -
Nux!