How to uninstall kernals?


Last Updated:

  1. Wazoo

    Wazoo Well-Known Member This Topic's Starter

    Joined:
    Dec 3, 2009
    Messages:
    74
    Likes Received:
    0
    I recently installed one of Chevy's low voltage kernels a few days ago and have since experience extremely laggy performance, random reboots, and terrible battery life compare to what I used to get before I installed it. And most of that stuff has been happening even when I have it maxed at 550. How do I go about uninstalling this kernel?
     

    Advertisement
  2. Nicks88

    Nicks88 Well-Known Member

    Joined:
    Nov 15, 2009
    Messages:
    337
    Likes Received:
    59
    Install a new one. Try out P3's: P3Droid Kernels

    Moral of the story: Always backup your device before making changes.
     
  3. Wazoo

    Wazoo Well-Known Member This Topic's Starter

    Joined:
    Dec 3, 2009
    Messages:
    74
    Likes Received:
    0
    I did a complete nandroid backup before I installed it, so restoring it is the only way to get rid of it?
     
  4. Nicks88

    Nicks88 Well-Known Member

    Joined:
    Nov 15, 2009
    Messages:
    337
    Likes Received:
    59
    Yes, unless you can find the exact kernel file somewhere and install it that way. But go ahead and mess around with P3 and others kernels since you have a backup. Maybe you can find one that really works with your phone.
     
  5. Wazoo

    Wazoo Well-Known Member This Topic's Starter

    Joined:
    Dec 3, 2009
    Messages:
    74
    Likes Received:
    0
    Ok. And when a new kernel is installed, does it replace the older one, or how does that work?
     
  6. johnlgalt

    johnlgalt Antidisestablishmentarian VIP Member

    Joined:
    Oct 28, 2009
    Messages:
    9,416
    Likes Received:
    1,919
    IIRC, If you do an Advanced restore and only restore boot, it will restore the original kernel that came with the ROM. You DO NOT wipe when doing this.

    I may be wrong about this, though. let me look around....

    Well, Nick says otherwise....
     
  7. Nicks88

    Nicks88 Well-Known Member

    Joined:
    Nov 15, 2009
    Messages:
    337
    Likes Received:
    59
    You lost me at advanced...lol
     
  8. Nicks88

    Nicks88 Well-Known Member

    Joined:
    Nov 15, 2009
    Messages:
    337
    Likes Received:
    59
    If you are looking for what happens technically, then I'm sure someone will chime in and give us some 'geek speak'. But for my limited brain capacity, it 'magically' takes the place of the old one.
     
  9. johnlgalt

    johnlgalt Antidisestablishmentarian VIP Member

    Joined:
    Oct 28, 2009
    Messages:
    9,416
    Likes Received:
    1,919
    He said he has a Nandroid of the original ROM.

    In SPRecovery AND ClockworkMod, you have the options to perform an Advanced Nandroid restore - and this allows you to pick the file an pick only the elements that you want to restore.

    I am still looking, but IIRC, the boot section of a Nandroid backup is (or at the very least contains) the kernel. Therefore, restoring just boot via an Advanced Nandroid restore should, theoretically, restore the original kernel, without having to wipe all the rest of the stuff out, leaving you with your customizations, themes, etc.
     
  10. Nicks88

    Nicks88 Well-Known Member

    Joined:
    Nov 15, 2009
    Messages:
    337
    Likes Received:
    59
    Let us know of what you find...I'm always down to get my learn on! Or we could find a guinea pig....Wazzzzoooooooo?
     
  11. johnlgalt

    johnlgalt Antidisestablishmentarian VIP Member

    Joined:
    Oct 28, 2009
    Messages:
    9,416
    Likes Received:
    1,919
    Exactly. Think of the kernel as (loosely) a driver on your computer for, say, your sound card - you install a new driver and it replaces the existing driver.

    This is an over-simplification, but it should be sufficiently accurate for argument's sake.
     
  12. johnlgalt

    johnlgalt Antidisestablishmentarian VIP Member

    Joined:
    Oct 28, 2009
    Messages:
    9,416
    Likes Received:
    1,919
    Hell, I'll be my own guinea pig. I am running Pete's BB 0.2, and was just about to flash the jldfg kernel on here - so I can do that, then restore the boot and see if it reverts.

    Give me 5 minutes.
     
  13. Wazoo

    Wazoo Well-Known Member This Topic's Starter

    Joined:
    Dec 3, 2009
    Messages:
    74
    Likes Received:
    0
    Thanks, that's all I need to know.
     
  14. johnlgalt

    johnlgalt Antidisestablishmentarian VIP Member

    Joined:
    Oct 28, 2009
    Messages:
    9,416
    Likes Received:
    1,919
    I am such a moron. I didn't realize that I had not made a Nandroid backup of Pete's BB that I ma running - so I cannot readily test it (only B/U I have already has the kernel I just flashed onto this ROM....

    I will make a B/U of this ROM, then change the kernel, then restore from that made backup - so my end result should be that I get this kernel back.

    Give me about 10 minutes more.
     
  15. johnlgalt

    johnlgalt Antidisestablishmentarian VIP Member

    Joined:
    Oct 28, 2009
    Messages:
    9,416
    Likes Received:
    1,919
    OK, verified.

    if you do an Advanced Nandroid Restore and restore only boot it will restore your original kernel.
     
    Nicks88 likes this.

Share This Page

Loading...