How do I edit grub config file?

To edit grub, make your changes to /etc/default/grub . Then run sudo update-grub . The update-grub will make the permanent changes to your grub. cfg file.

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How do I delete grub files?

To remove it:

Hit Windows + X and select Disk Management .
Find the Ubuntu partition. It will probably be a large partition without a drive letter.
Be sure you have the correct partition!
Right-click the partition and delete or reformat it with a Windows filesystem.

How do I remove old kernels from grub?

7 Answers

Open up a terminal ( Ctrl + Alt + T ).
Type uname -r .
Run the following command: dpkg –list | grep linux-image .
Note down the names of all the kernels which you want to remove.
To remove the kernels, run: sudo apt-get purge linux-image-x.x.x.x-xyz (replace the kernel name with an appropriate one).

How do I remove old Ubuntu kernels?

The procedure to delete all unused old kernels on Ubuntu Linux version 18.04 and 20.04 LTS is as follows:

First, boot into a new kernel.
List all other older kernel using the dpkg command.
Note down system disk space usage by running the df -H command.
Delete all unused old kernels, run: sudo apt –purge autoremove.

Where are grub menu entries stored?

The primary configuration file for changing menu display settings is called grub and by default is located in the /etc/default folder. There are multiple files for configuring the menu – /etc/default/grub mentioned above, and all the files in the /etc/grub.

Which directory contains the configuration file for grub 2?

It is generated by the grub2-mkconfig program using a set of primary configuration files and the grub default file as a source for user configuration specifications. The /boot/grub2/grub. cfg file is first generated during Linux installation and regenerated when a new kernel is installed.

How do I purge and reinstall grub?

Reverting to GRUB Legacy

Open a terminal: Applications, Accessories, Terminal.
Optional: Make backup copies of the main GRUB 2 directories and files. sudo cp /etc/default/grub /etc/default/grub.old.
Remove GRUB 2. sudo apt-get purge grub-pc.
Install GRUB 0.97.
With grub installed, the user must still create the menu.
Reboot.

How do I remove unused kernels?

How do I remove old packages from Ubuntu?

7 Ways to Uninstall Ubuntu Packages. Remove With Ubuntu Software Manager. Use the Synaptic Package Manager.
How to Remove Package on Ubuntu From Command Line. Apt-Get Remove Command. Apt-Get Purge Command. Clean Command. AutoRemove Command.

How do I remove a partition from GRUB?

select the partition that reads something like ubuntu by using the Sel partition “its name” [enter] command and type Delete partition Override [enter] to delete it. Once you delete the Ubuntu partition, you just have to exit from the command prompt and restart your system.