How do I change my kernel boot line?
To change kernel parameters only during a single boot process, proceed as follows:
- Start the system and, on the GRUB 2 boot screen, move the cursor to the menu entry you want to edit, and press the e key for edit.
- Move the cursor down to find the kernel command line.
- Move the cursor to the end of the line.
How do I change kernel config?
To configure the kernel, change to /usr/src/linux and enter the command make config. Choose the features you want supported by the kernel. Usually, There are two or three options: y, n, or m. m means that this device will not be compiled directly into the kernel, but loaded as a module.
How do I set default boot kernel in Grub?
To force a system to always use a particular menu entry and to set default boot kernel, use the menu entry name as the key to the GRUB_DEFAULT directive in the /etc/default/grub file. GRUB 2 supports using a numeric value as the key for the saved_entry directive to change the default order in which the kernel or operating systems are loaded.
How to change default boot kernel on CentOS 6?
The first step to change the default boot kernel on CentOS 6 is to get a list of all available kernel images added to GRUB. The following command will show you the list. From the list, identify the kernel that you want to set as default. Each kernel in the list is assigned by GRUB a numeric entry value starting from 0 in an increasing order.
How to change default kernel in Oracle Linux 6?
Oracle Linux 6 and 5 use the GRUB boot loader. To change the default boot kernel, you modify the GRUB configuration file, /etc/grub.conf. The default directive specifies the kernel entry that GRUB should boot by default. GRUB counts the kernel entries in the configuration file starting at 0.
Is there a way to boot from an older kernel?
There are 2 ways to boot from an older kernel: 1. List out the available kernel filenames available in your system: