Dear All On my CentOS server , the '/boot/grub/menu.lst' has the right configuration but when I reboot my CentOS server I cannot enter to grub edit menu to edit my boot kernel by pressing the 'e' key . Can you please confirm if I can activate it through issuing the followings : #grub-install /dev/hdax Is it a safe procedure to try with? Please confirm. Thank you
On Mon, Feb 1, 2010 at 12:04 AM, hadi motamedi motamedi24@gmail.com wrote:
Dear All On my CentOS server , the '/boot/grub/menu.lst' has the right configuration but when I reboot my CentOS server I cannot enter to grub edit menu to edit my boot kernel by pressing the 'e' key . Can you please confirm if I can activate it through issuing the followings : #grub-install /dev/hdax Is it a safe procedure to try with? Please confirm. Thank you
Are you starting with a <space> to interrupt the boot?
Have you tried editing it using a normal editor (vi or emacs) as root while the system is up?
What exactly are you trying to do?
mhr
On Mon, Feb 1, 2010 at 8:24 AM, MHR mhullrich@gmail.com wrote:
On Mon, Feb 1, 2010 at 12:04 AM, hadi motamedi motamedi24@gmail.com wrote:
Dear All On my CentOS server , the '/boot/grub/menu.lst' has the right
configuration
but when I reboot my CentOS server I cannot enter to grub edit menu to
edit
my boot kernel by pressing the 'e' key . Can you please confirm if I can activate it through issuing the followings : #grub-install /dev/hdax Is it a safe procedure to try with? Please confirm. Thank you
Are you starting with a <space> to interrupt the boot?
Have you tried editing it using a normal editor (vi or emacs) as root while the system is up?
What exactly are you trying to do?
mhr _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Thanks for your message . When I reboot my CentOS server I see the the menu with a timer but I cannot enter to edit my boot kernel by pressing 'e' key . Then the timer will expire and the boot process will begin . I want to be able to edit my kernel through grub edit so I asked if I can try for 'grub-install /dev/hdax' w/o any harm on my CentOS server . Do you mean I can edit my '/boot/grub/menu.lst' by vi the same as I want to do inside my grub edit ? Are they the same procedures ? Please confirm.
On 1 February 2010 08:33, hadi motamedi motamedi24@gmail.com wrote:
On Mon, Feb 1, 2010 at 8:24 AM, MHR mhullrich@gmail.com wrote:
On Mon, Feb 1, 2010 at 12:04 AM, hadi motamedi motamedi24@gmail.com wrote:
Dear All On my CentOS server , the '/boot/grub/menu.lst' has the right configuration but when I reboot my CentOS server I cannot enter to grub edit menu to edit my boot kernel by pressing the 'e' key . Can you please confirm if I can activate it through issuing the followings : #grub-install /dev/hdax Is it a safe procedure to try with? Please confirm. Thank you
Are you starting with a <space> to interrupt the boot?
Have you tried editing it using a normal editor (vi or emacs) as root while the system is up?
What exactly are you trying to do?
mhr _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Thanks for your message . When I reboot my CentOS server I see the the menu with a timer but I cannot enter to edit my boot kernel by pressing 'e' key . Then the timer will expire and the boot process will begin . I want to be able to edit my kernel through grub edit so I asked if I can try for 'grub-install /dev/hdax' w/o any harm on my CentOS server . Do you mean I can edit my '/boot/grub/menu.lst' by vi the same as I want to do inside my grub edit ? Are they the same procedures ? Please confirm.
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
When grub runs it will read /boot/grub/menu.lst to determine it's configuration. There is no need to run grub-install for a change to configuration as that just installs the stage 1 boot loader code in the MBR or partition. ALSO SO FAR AS I recakk (migth be wrong) any edits done to the configuration via 'e' from the grub menu (which sounds like what you want to do) are non-persistent and it's more for debugging and//or booting with a broken configuration... If you can get into the system itself edit /boot/grub/menu.lst ....
Phew... thankfully we don't have grub2 in centos yet and issues surrounding module loading and the /etc/grub.d architecture ;)
On Mon, Feb 1, 2010 at 9:11 AM, James Hogarth james.hogarth@gmail.comwrote:
On 1 February 2010 08:33, hadi motamedi motamedi24@gmail.com wrote:
On Mon, Feb 1, 2010 at 8:24 AM, MHR mhullrich@gmail.com wrote:
On Mon, Feb 1, 2010 at 12:04 AM, hadi motamedi motamedi24@gmail.com wrote:
Dear All On my CentOS server , the '/boot/grub/menu.lst' has the right configuration but when I reboot my CentOS server I cannot enter to grub edit menu to edit my boot kernel by pressing the 'e' key . Can you please confirm if I
can
activate it through issuing the followings : #grub-install /dev/hdax Is it a safe procedure to try with? Please confirm. Thank you
Are you starting with a <space> to interrupt the boot?
Have you tried editing it using a normal editor (vi or emacs) as root while the system is up?
What exactly are you trying to do?
mhr _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Thanks for your message . When I reboot my CentOS server I see the the
menu
with a timer but I cannot enter to edit my boot kernel by pressing 'e'
key .
Then the timer will expire and the boot process will begin . I want to be able to edit my kernel through grub edit so I asked if I can try for 'grub-install /dev/hdax' w/o any harm on my CentOS server . Do you mean I can edit my '/boot/grub/menu.lst' by vi the same as I want to do inside
my
grub edit ? Are they the same procedures ? Please confirm.
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
When grub runs it will read /boot/grub/menu.lst to determine it's configuration. There is no need to run grub-install for a change to configuration as that just installs the stage 1 boot loader code in the MBR or partition. ALSO SO FAR AS I recakk (migth be wrong) any edits done to the configuration via 'e' from the grub menu (which sounds like what you want to do) are non-persistent and it's more for debugging and//or booting with a broken configuration... If you can get into the system itself edit /boot/grub/menu.lst ....
Phew... thankfully we don't have grub2 in centos yet and issues surrounding module loading and the /etc/grub.d architecture ;) _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
With many thanks for your confirmation .
On Mon, Feb 1, 2010 at 12:33 AM, hadi motamedi motamedi24@gmail.com wrote:
Thanks for your message . When I reboot my CentOS server I see the the menu with a timer but I cannot enter to edit my boot kernel by pressing 'e' key .
Perhaps I wasn't clear the first time. To interrupt the timer, you press the <space> bar. You can't edit anything until after that point.
Then the timer will expire and the boot process will begin . I want to be able to edit my kernel through grub edit so I asked if I can try for 'grub-install /dev/hdax' w/o any harm on my CentOS server . Do you mean I can edit my '/boot/grub/menu.lst' by vi the same as I want to do inside my grub edit ? Are they the same procedures ? Please confirm.
Yes, you can just edit the menu.lst with any text editor. /boot/grub/menu.lst is a symlink to /boot/grub/grub.conf, same as /etc/grub.conf. You have to be root to edit it (them).
grub-install won't do what you want.
mhr
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hadi motamedi -
James Hogarth -
MHR