Compile and install the new kernel on Ubuntu 14.04.1 LTS

Compile and install the new kernel on Ubuntu 14.04.1 LTS

1. kernel configuration

I don't want to configure it one by one here, so I will directly copy the current kernel configuration of Ubuntu 14.04.1 LTS.
First cd to the root directory linux-3.15.8 of the kernel source code to compile, then copy the kernel configuration in the current ubuntu system as the new kernel configuration
Cp/boot/config-3.13.0-32-generic./. config
Sudo make oldconfig

Haha, I found that I didn't steal too much laziness, or I had to pick out a bunch of new configuration options. It is estimated that the new kernel version is indeed a lot higher. However, selecting n is complete, because the old kernel configuration is enough for my machine to work.

2. Compile and install

Sudo make ----- make directly without adding any parameters, that is, make all, which contains make modules.
Sudo make modules_install ----- install modules under/lib/modules
Sudo make install ----- install bzimage under/boot, and it automatically adds the startup Item of the newly installed kernel to/boot/grub according to the kernel version information under/boot. cfg.
So far, compilation and installation are complete. You only need to restart your computer and you will find that Ubuntu has two versions of kernel available at startup. Enjoy it!

After the restart, select the new version of the kernel, and then view the kernel version information, cat/proc/version
Linux version 3.15.8 (root @ jack) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) #1 SMP Mon Aug 4 01:51:38 CST 2014
Look, the current kernel is newly compiled and installed.
 

3. Delete the kernel startup Item

If you want to delete the kernel version compiled and installed by yourself in the GRUB startup Item, you only need to delete the related items copied during installation in the/lib/modules and/boot directories. Then
Call sudo update-grub, which automatically deletes the startup Item of the corresponding kernel version in/boot/grub. cfg.

Last note:

Sudo make install

This command copies the "arch/x86/boot/bzImage" file in the compiling folder to "/boot", and also copies config and System. the map file will eventually contain more files in "/boot:

System. map-3.15.8
Vmlinuz-3.15.8
Initrd. img-3.15.8
Config-3.15.8

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