| View previous topic :: View next topic |
| Author |
Message |
phypor
n00b
Joined: 25 Jun 2002
Posts: 68
Location: Texas
|
 Posted: Fri Dec 06, 2002 7:05 pm Post subject: KC8: Backup Kernel |
 |
|
Navigation: [prev KC7: How do I know when to compile something into the kernel, and when should I compile it as a module?] [next KC9: Multiple Kernels] [Kernel Compilation] [Table of Contents]
KC8: How do I install a new kernel while still keeping my current one around so that I can use it if necessary?
These scripts automate updating and archiving kernels.
Do the following as root:
First check where your boot partition is mounted
| Code: |
bash# grep boot /etc/fstab
|
take note of the /dev/hd?? where /boot is mounted for the following scripts
| Code: |
bash# nano /usr/sbin/kernel-save
|
and paste in the following:
| Code: |
#!/bin/sh
# Substitute the ?? here with what came up in the grep /etc/fstab above
BOOT='/dev/hd??'
WHEN=`date +%y%m%d`
WHAT="$1"
mount $BOOT /boot
cp -v /boot/System.map "/boot/System.map-$WHEN-$WHAT"
cp -v /boot/bzImage "/boot/bzImage-$WHEN-$WHAT"
cp -v /boot/config "/boot/config-$WHEN-$WHAT"
|
| Code: |
bash# nano /usr/sbin/kernel-install
|
and paste in the following:
| Code: |
#!/bin/sh
# Substitute the ?? here with what came up in the grep /etc/fstab above
BOOT='/dev/hd??'
mount $BOOT /boot
cp -v /usr/src/linux/System.map /boot
cp -v /usr/src/linux/arch/i386/boot/bzImage /boot
cp -v /usr/src/linux/.config /boot/config
|
Finally, change the privs so those can be executed as root:
| Code: |
bash# chmod 700 /usr/sbin/kernel-save
bash# chmod 700 /usr/sbin/kernel-install
|
After kernel compile, to save a copy of your old kernel and install the new one do
| Code: |
bash# kernel-save information-about-old-kernel
bash# kernel-install
|
If you get a message about boot already being mounted, it doesn't affect anything.
Substitute the 'information-about-old-kernel' with a real bit of infomation...
kernel-save pre-alsa-09
kernel-save vanilla-2.4.19
kernel-save original-stable
The part about System.map may not be neccessary for everyone,
if you know you don't need it, then just comment it out.
_________________
ALWAYS stay away from tanks enguled in fire.
- 2000 Emergency Response Guidebook, pg307 |
|
| Back to top |
|
 |
rac
Bodhisattva
Joined: 30 May 2002
Posts: 6553
Location: Japanifornia
|
| Posted: Fri Dec 06, 2002 8:27 pm Post subject: |
|
|
Feedback to [FAQF] KC: Kernel Compilation.
_________________
For every higher wall, there is a taller ladder |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
|
Frequently Asked Questions
