How do I delete old Grub entries?

7 Answers

1. Open up a terminal ( Ctrl + Alt + T ).
2. Type uname -r .
3. Run the following command: dpkg –list | grep linux-image .
4. Note down the names of all the kernels which you want to remove.
5. 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 OS from boot menu?

Follow these steps:

1. Click Start.
2. Type msconfig in the search box or open Run.
3. Go to Boot.
4. Select which Windows version you’d like to boot into directly.
5. Press Set as Default.
6. You can delete the earlier version by selecting it and then clicking Delete.
7. Click Apply.
8. Click OK.

How do I clean up Grub menu?

Clean up your grub menu from the kernels you do not use

1. Determine which Kernel you are using. Just run: uname -r. and write down the result, in my case this was my output: $ uname -r 2.6.22-14-generic.
2. Look for all installed kernel images. Go to /boot/ and list its contents. cd /boot ls vmlinuz*
3. Remove the kernels you want.

How do I edit Grub bootloader?

If you want to edit the entry before booting, press e to edit.

1. The initial screen displayed for editing shows information GRUB needs to find and boot the operating system, as pictured in Figure 2, “The GRUB edit screen, Part 1”.
2. Using the arrow keys, move down to the line that contains the boot arguments.

How do I remove OS from Grub menu?

Step 2: Scan through the list to locate the Grub entry you’re looking to get rid of. When you’ve found it, right-click on it to open up the right-click menu. Step 3: Look through the right-click menu for the “Remove” button to instantly delete the menu entry from your Grub bootloader list.

How do I remove old kernels?

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

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

How do I remove OS from Boot Manager?

Through System Configuration

1. Press the Windows + R keys to open the Run dialog, type msconfig, and press Enter.
2. Click/tap on the Boot tab. (
3. Select the operating system you want to delete that is not set as the Default OS, and click/tap on Delete. (
4. Check the Make all boot settings permanent box, and click/tap on OK. (

How do I remove BIOS entries?

From the System Utilities screen, select System Configuration > BIOS/Platform Configuration (RBSU) > Boot Options > Advanced UEFI Boot Maintenance > Delete Boot Option and press Enter. Select one or more options from the list. Press Enter after each selection. Select an option and press Enter.

How do I change my default Grub OS?

GNU GRUB Menu: Change the Default Boot OS

1. Find the string for the OS you want to set as the default.
2. Highlight the string and copy it to the clipboard.
3. Edit /etc/default/grub $ sudo vi /etc/default/grub.

How do I remove old OS from BIOS?

In System Configuration, go to the Boot tab, and check whether the Windows that you want to keep is set as default. To do that, select it and then press “Set as default.” Next, select the Windows that you want to uninstall, click Delete, and then Apply or OK.

How do I edit grub menu?

Reboot the system. When the boot sequence begins, the GRUB main menu is displayed. Use the arrow keys to select the boot entry to edit, then type e to access the GRUB edit menu. Use the arrow keys to select the kernel or kernel$ line in this menu.

How do I revert to a previous kernel in Ubuntu?

Hold the Shift key when Ubuntu is loading, choose Advanced options for Ubuntu from the Grub screen and load the kernel version. NOTE: This works for Ubuntu VM running in Virtualbox as well. NOTE: This change is not permanent, as it will revert back to latest kernel on restart.

How to uninstall and remove GRUB bootloader from Windows 10?

After uninstall Ubuntu or any other Linux Based OS Grub Bootloader remains installed. You can Uninstall and Remove Grub Bootloader from Windows 10. Once you’ve done this, Grub Bootloader will no longer available on your computer. 1. Type Windows Key + R to open Run box and type cmd inside it.

How to remove grub menu in Linux?

Step 1: Look for the “List configuration” tab in the app and click it with the mouse to load up the Grub menu found on your Linux PC. Step 2: Scan through the list to locate the Grub entry you’re looking to get rid of. When you’ve found it, right-click on it to open up the right-click menu.

How do I use GRUB Customizer to remove boot entries?

The Grub Customizer application isn’t installed on any distribution by default, so you’ll need to go through the installation process before learning how to use it to remove boot entries. To install the latest version of Grub Customizer, open up a terminal window by pressing Ctrl + Alt + T on the keyboard.

How do I change the default boot order in grubgui?

GUI: right click grub.cfg and choose EDIT Edit out the entries that you don’t want and change your boot order and default boot option as desired (it is straightforward enough). Every menu entry is conveniently preceded by the term menuentry. Delete everything from menuentry all the way up to and including the first closing curly bracket }.