I have not given this much thought, yet.
I can boot into a LM22.2 Live....and I can change the kernel there from 6:14 to 6:8 easily, but of course the Live version continues to run 6:14. becasue it is a Live version I cannot reboot and select a different kernel at Gruib because all changes are lost when I reboot.
The general consensus is that this cannot be done. However...as much as I am somewhat distrusting of AI's abilities, it has the following to say:
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You generally cannot permanently change the kernel on a Linux Mint live USB system because it runs from a read-only filesystem. To use a newer kernel with a live environment, you must create a new ISO by installing Mint to a USB drive, then upgrading the kernel on that installation, and finally creating a new ISO from the updated system. You can also temporarily change the kernel parameters by pressing 'e' at the GRUB boot menu to edit the boot parameters for that session.
To permanently change the kernel for a live USB:
Install Linux Mint to a USB drive:
Boot your computer from the Linux Mint live USB and proceed with the installation onto another USB drive.
Update the installed system:
Once Mint is installed on the new USB, boot into it and use the Update Manager to install the latest kernel available.
Create a new ISO:
After rebooting to verify the new kernel is running, you can use tools like the deprecated Pinguy Builder or other methods to create a new ISO from this updated system.
Create a new live USB:
Write the newly created ISO back to a USB drive to create a live USB with the newer kernel.
To temporarily change kernel parameters for a single boot:
Boot from the live USB: Start your computer from the live USB.
Access the GRUB menu: During the boot process, repeatedly press the Esc key to bring up the GRUB boot menu.
Edit boot parameters: Select the desired boot entry and press e to edit it.
Locate boot parameters: Find the line that ends with "quiet splash" and contains your boot parameters.
Make changes: Modify or add your desired kernel parameters to this line.
Boot with changes: Press the specified key (often Ctrl+X or F10) to boot with the new parameters for that session.
Important Considerations:
Read-Only Filesystem: Live USB environments use a read-only filesystem, so changes made during a live session are temporary and will be lost upon reboot.
Compatibility: For newer hardware, it is often recommended to use a newer kernel.
Don't remove the active kernel: When changing kernels on an installed system, the currently active kernel cannot be removed, so you must boot into a different kernel before you can uninstall the newer one.
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I have not wrapped my head around the above, yet. (other things on my mind)