How do I add a kernel boot parameter?
I need to add the boot parameter foo=bar to my kernel. How can I do this once for testing, and permanently if testing was a success?
kernel grub2
edited Jan 20 '13 at 18:06
Jorge Castro
36k105422617
asked Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
add a comment |
I need to add the boot parameter foo=bar to my kernel. How can I do this once for testing, and permanently if testing was a success?
kernel grub2
edited Jan 20 '13 at 18:06
Jorge Castro
36k105422617
asked Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
add a comment |
I need to add the boot parameter foo=bar to my kernel. How can I do this once for testing, and permanently if testing was a success?
kernel grub2
edited Jan 20 '13 at 18:06
Jorge Castro
36k105422617
asked Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
I need to add the boot parameter foo=bar to my kernel. How can I do this once for testing, and permanently if testing was a success?
kernel grub2
kernel grub2
edited Jan 20 '13 at 18:06
Jorge Castro
36k105422617
asked Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
edited Jan 20 '13 at 18:06
Jorge Castro
36k105422617
asked Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
edited Jan 20 '13 at 18:06
Jorge Castro
36k105422617
edited Jan 20 '13 at 18:06
Jorge Castro
36k105422617
edited Jan 20 '13 at 18:06
Jorge Castro
36k105422617
36k105422617
asked Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
asked Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
asked Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
46.9k32172212
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
To temporarily add a boot parameter to a kernel:
- Start your system and wait for the GRUB menu to show (if you don't see a GRUB menu, press and hold the left Shift key right after starting the system).
- Now highlight the kernel you want to use, and press the e key. You should be able to see and edit the commands associated with the highlighted kernel.
- Go down to the line starting with
linuxand add your parameterfoo=barto its end. - Now press Ctrl + x to boot.
To make this change permanent:
From a terminal (or after pressing Alt + F2) run:
gksudo gedit /etc/default/grub
(or use
sudo nanoifgksudoorgeditare not available) and enter your password.
Find the line starting with
GRUB_CMDLINE_LINUX_DEFAULTand appendfoo=barto its end. For example:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash foo=bar"
Save the file and close the editor.
Finally, start a terminal and run:
sudo update-grub
to update GRUB's configuration file (you probably need to enter your password).
On the next reboot, the kernel should be started with the boot parameter. To permanently remove it, simply remove the parameter from GRUB_CMDLINE_LINUX_DEFAULT and run sudo update-grub again.
To verify your changes, you can see exactly what parameters your kernel booted with by executing cat /proc/cmdline.
Wiki Page:
- https://help.ubuntu.com/community/BootOptions
edited Jan 4 '18 at 15:16
Zanna
50.2k13133241
answered Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
3
FYI to test this runcat /proc/cmdline
– Avindra Goolcharan
Aug 3 '16 at 15:13
Shift doesn’t work for me. I used Esc instead. Had to be careful not to hold it too long or it would blow right through GRUB
– eqzx
Jul 7 '18 at 3:18
add a comment |
To add any kernel option:
for a liveCD session: follow these steps
for an Existing Installation: use Boot-Repair's
Add a kernel optionorEdit GRUB configuration fileoptions.
See also this documentation.
answered Jul 5 '12 at 21:25
LovinBuntuLovinBuntu
2,84021519
add a comment |
Alternatively, you may also use the handy grub-customizer:
sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer
gksu grub-customizer &
Just open a boot entry, and edit its kernel parameters as highlighted in the screenshot below:
edited May 19 '18 at 8:33
David Foerster
27.8k1364110
answered Dec 11 '12 at 1:59
jasxunjasxun
35625
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
To temporarily add a boot parameter to a kernel:
- Start your system and wait for the GRUB menu to show (if you don't see a GRUB menu, press and hold the left Shift key right after starting the system).
- Now highlight the kernel you want to use, and press the e key. You should be able to see and edit the commands associated with the highlighted kernel.
- Go down to the line starting with
linuxand add your parameterfoo=barto its end. - Now press Ctrl + x to boot.
To make this change permanent:
From a terminal (or after pressing Alt + F2) run:
gksudo gedit /etc/default/grub
(or use
sudo nanoifgksudoorgeditare not available) and enter your password.
Find the line starting with
GRUB_CMDLINE_LINUX_DEFAULTand appendfoo=barto its end. For example:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash foo=bar"
Save the file and close the editor.
Finally, start a terminal and run:
sudo update-grub
to update GRUB's configuration file (you probably need to enter your password).
On the next reboot, the kernel should be started with the boot parameter. To permanently remove it, simply remove the parameter from GRUB_CMDLINE_LINUX_DEFAULT and run sudo update-grub again.
To verify your changes, you can see exactly what parameters your kernel booted with by executing cat /proc/cmdline.
Wiki Page:
- https://help.ubuntu.com/community/BootOptions
edited Jan 4 '18 at 15:16
Zanna
50.2k13133241
answered Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
3
FYI to test this runcat /proc/cmdline
– Avindra Goolcharan
Aug 3 '16 at 15:13
Shift doesn’t work for me. I used Esc instead. Had to be careful not to hold it too long or it would blow right through GRUB
– eqzx
Jul 7 '18 at 3:18
add a comment |
To temporarily add a boot parameter to a kernel:
- Start your system and wait for the GRUB menu to show (if you don't see a GRUB menu, press and hold the left Shift key right after starting the system).
- Now highlight the kernel you want to use, and press the e key. You should be able to see and edit the commands associated with the highlighted kernel.
- Go down to the line starting with
linuxand add your parameterfoo=barto its end. - Now press Ctrl + x to boot.
To make this change permanent:
From a terminal (or after pressing Alt + F2) run:
gksudo gedit /etc/default/grub
(or use
sudo nanoifgksudoorgeditare not available) and enter your password.
Find the line starting with
GRUB_CMDLINE_LINUX_DEFAULTand appendfoo=barto its end. For example:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash foo=bar"
Save the file and close the editor.
Finally, start a terminal and run:
sudo update-grub
to update GRUB's configuration file (you probably need to enter your password).
On the next reboot, the kernel should be started with the boot parameter. To permanently remove it, simply remove the parameter from GRUB_CMDLINE_LINUX_DEFAULT and run sudo update-grub again.
To verify your changes, you can see exactly what parameters your kernel booted with by executing cat /proc/cmdline.
Wiki Page:
- https://help.ubuntu.com/community/BootOptions
edited Jan 4 '18 at 15:16
Zanna
50.2k13133241
answered Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
3
FYI to test this runcat /proc/cmdline
– Avindra Goolcharan
Aug 3 '16 at 15:13
Shift doesn’t work for me. I used Esc instead. Had to be careful not to hold it too long or it would blow right through GRUB
– eqzx
Jul 7 '18 at 3:18
add a comment |
To temporarily add a boot parameter to a kernel:
- Start your system and wait for the GRUB menu to show (if you don't see a GRUB menu, press and hold the left Shift key right after starting the system).
- Now highlight the kernel you want to use, and press the e key. You should be able to see and edit the commands associated with the highlighted kernel.
- Go down to the line starting with
linuxand add your parameterfoo=barto its end. - Now press Ctrl + x to boot.
To make this change permanent:
From a terminal (or after pressing Alt + F2) run:
gksudo gedit /etc/default/grub
(or use
sudo nanoifgksudoorgeditare not available) and enter your password.
Find the line starting with
GRUB_CMDLINE_LINUX_DEFAULTand appendfoo=barto its end. For example:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash foo=bar"
Save the file and close the editor.
Finally, start a terminal and run:
sudo update-grub
to update GRUB's configuration file (you probably need to enter your password).
On the next reboot, the kernel should be started with the boot parameter. To permanently remove it, simply remove the parameter from GRUB_CMDLINE_LINUX_DEFAULT and run sudo update-grub again.
To verify your changes, you can see exactly what parameters your kernel booted with by executing cat /proc/cmdline.
Wiki Page:
- https://help.ubuntu.com/community/BootOptions
edited Jan 4 '18 at 15:16
Zanna
50.2k13133241
answered Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
To temporarily add a boot parameter to a kernel:
- Start your system and wait for the GRUB menu to show (if you don't see a GRUB menu, press and hold the left Shift key right after starting the system).
- Now highlight the kernel you want to use, and press the e key. You should be able to see and edit the commands associated with the highlighted kernel.
- Go down to the line starting with
linuxand add your parameterfoo=barto its end. - Now press Ctrl + x to boot.
To make this change permanent:
From a terminal (or after pressing Alt + F2) run:
gksudo gedit /etc/default/grub
(or use
sudo nanoifgksudoorgeditare not available) and enter your password.
Find the line starting with
GRUB_CMDLINE_LINUX_DEFAULTand appendfoo=barto its end. For example:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash foo=bar"
Save the file and close the editor.
Finally, start a terminal and run:
sudo update-grub
to update GRUB's configuration file (you probably need to enter your password).
On the next reboot, the kernel should be started with the boot parameter. To permanently remove it, simply remove the parameter from GRUB_CMDLINE_LINUX_DEFAULT and run sudo update-grub again.
To verify your changes, you can see exactly what parameters your kernel booted with by executing cat /proc/cmdline.
Wiki Page:
- https://help.ubuntu.com/community/BootOptions
edited Jan 4 '18 at 15:16
Zanna
50.2k13133241
answered Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
edited Jan 4 '18 at 15:16
Zanna
50.2k13133241
edited Jan 4 '18 at 15:16
Zanna
50.2k13133241
edited Jan 4 '18 at 15:16
Zanna
50.2k13133241
50.2k13133241
answered Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
answered Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
answered Dec 30 '10 at 22:51
htorquehtorque
46.9k32172212
46.9k32172212
3
FYI to test this runcat /proc/cmdline
– Avindra Goolcharan
Aug 3 '16 at 15:13
Shift doesn’t work for me. I used Esc instead. Had to be careful not to hold it too long or it would blow right through GRUB
– eqzx
Jul 7 '18 at 3:18
add a comment |
3
FYI to test this runcat /proc/cmdline
– Avindra Goolcharan
Aug 3 '16 at 15:13
Shift doesn’t work for me. I used Esc instead. Had to be careful not to hold it too long or it would blow right through GRUB
– eqzx
Jul 7 '18 at 3:18
3
3
FYI to test this run
cat /proc/cmdline– Avindra Goolcharan
Aug 3 '16 at 15:13
FYI to test this run
cat /proc/cmdline– Avindra Goolcharan
Aug 3 '16 at 15:13
Shift doesn’t work for me. I used Esc instead. Had to be careful not to hold it too long or it would blow right through GRUB
– eqzx
Jul 7 '18 at 3:18
Shift doesn’t work for me. I used Esc instead. Had to be careful not to hold it too long or it would blow right through GRUB
– eqzx
Jul 7 '18 at 3:18
add a comment |
To add any kernel option:
for a liveCD session: follow these steps
for an Existing Installation: use Boot-Repair's
Add a kernel optionorEdit GRUB configuration fileoptions.
See also this documentation.
answered Jul 5 '12 at 21:25
LovinBuntuLovinBuntu
2,84021519
add a comment |
To add any kernel option:
for a liveCD session: follow these steps
for an Existing Installation: use Boot-Repair's
Add a kernel optionorEdit GRUB configuration fileoptions.
See also this documentation.
answered Jul 5 '12 at 21:25
LovinBuntuLovinBuntu
2,84021519
add a comment |
To add any kernel option:
for a liveCD session: follow these steps
for an Existing Installation: use Boot-Repair's
Add a kernel optionorEdit GRUB configuration fileoptions.
See also this documentation.
answered Jul 5 '12 at 21:25
LovinBuntuLovinBuntu
2,84021519
To add any kernel option:
for a liveCD session: follow these steps
for an Existing Installation: use Boot-Repair's
Add a kernel optionorEdit GRUB configuration fileoptions.
See also this documentation.
answered Jul 5 '12 at 21:25
LovinBuntuLovinBuntu
2,84021519
answered Jul 5 '12 at 21:25
LovinBuntuLovinBuntu
2,84021519
answered Jul 5 '12 at 21:25
LovinBuntuLovinBuntu
2,84021519
answered Jul 5 '12 at 21:25
LovinBuntuLovinBuntu
2,84021519
2,84021519
add a comment |
add a comment |
Alternatively, you may also use the handy grub-customizer:
sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer
gksu grub-customizer &
Just open a boot entry, and edit its kernel parameters as highlighted in the screenshot below:
edited May 19 '18 at 8:33
David Foerster
27.8k1364110
answered Dec 11 '12 at 1:59
jasxunjasxun
35625
add a comment |
Alternatively, you may also use the handy grub-customizer:
sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer
gksu grub-customizer &
Just open a boot entry, and edit its kernel parameters as highlighted in the screenshot below:
edited May 19 '18 at 8:33
David Foerster
27.8k1364110
answered Dec 11 '12 at 1:59
jasxunjasxun
35625
add a comment |
Alternatively, you may also use the handy grub-customizer:
sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer
gksu grub-customizer &
Just open a boot entry, and edit its kernel parameters as highlighted in the screenshot below:
edited May 19 '18 at 8:33
David Foerster
27.8k1364110
answered Dec 11 '12 at 1:59
jasxunjasxun
35625
Alternatively, you may also use the handy grub-customizer:
sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer
gksu grub-customizer &
Just open a boot entry, and edit its kernel parameters as highlighted in the screenshot below:
edited May 19 '18 at 8:33
David Foerster
27.8k1364110
answered Dec 11 '12 at 1:59
jasxunjasxun
35625
edited May 19 '18 at 8:33
David Foerster
27.8k1364110
edited May 19 '18 at 8:33
David Foerster
27.8k1364110
edited May 19 '18 at 8:33
David Foerster
27.8k1364110
27.8k1364110
answered Dec 11 '12 at 1:59
jasxunjasxun
35625
answered Dec 11 '12 at 1:59
jasxunjasxun
35625
answered Dec 11 '12 at 1:59
jasxunjasxun
35625
35625
add a comment |
add a comment |
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