Ubuntu update kernel switch kernel startup, ubuntu update kernel Switch

Ubuntu update kernel switch kernel startup, ubuntu update kernel Switch

1. view the kernel commands to be updated:

Apt-cache search linux

This command will display all available kernels

2. Run the following command to install the kernel: 2.6.39-0.

Sudo apt-get install linux-headers-2.6.39-0-generic linux-image-2.6.39-0-generic

After installation, reboot is enabled. After restart, It is started with a new kernel.

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If you want to switch back to the original kernel, for example, the original kernel is 3.2, use the command first.

1. grep menuentry /boot/grub/grub.cfg

This command displays the kernel sequence, for example:

menuentry 'Ubuntu, with Linux 3.2.17experimental' --class ubuntu --class gnu-linux --class gnu --class os {menuentry 'Ubuntu, with Linux 3.2.17experimental (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {menuentry 'Ubuntu, with Linux 3.2.17-chipsee' --class ubuntu --class gnu-linux --class gnu --class os {menuentry 'Ubuntu, with Linux 3.2.17-chipsee (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {menuentry 'Ubuntu, with Linux 3.2.0-23-generic' --class ubuntu --class gnu-linux --class gnu --class os {menuentry 'Ubuntu, with Linux 3.2.0-23-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {menuentry "Memory test (memtest86+)" {menuentry "Memory test (memtest86+, serial console 115200)"

2. If you want to start with the 3.2.17 kernel version

GRUB_DEFAULT = 0

Change

GRUB_DEFAULT = 2 after saving

3. Run the sudo update-grub command.

4. After the restart, run the command uname-a to view the desired kernel.