7 Replies Latest reply: Feb 13, 2013 2:22 PM by snydjos
snydjos Level 1 Level 1

Hello, in a boneheaded move accidentally deleted mach_kernel and now my computer only boots Windows. I had just backed up my hard drive with time machine earlier in the day. I have a macbook from 2008. was running 10.5.8.


Mac OS X (10.5.8)
Reply by mende1 on Feb 8, 2013 2:05 PM Helpful

Welcome to the Apple Support Communities

 

It's the first time I see that an user deletes the OS X kernel by mistake. Be more careful the next time.

 

As you made a Time Machine backup before, it's easy to recover all your files:

 

1. Insert the Mac OS X Leopard DVD and press the C key while your computer is starting to start from the DVD.

 

2. After the disc has started, go to Utilities menu, choose the option to restore the backup and follow the steps

Reply by mende1 on Feb 8, 2013 2:24 PM Helpful

The problem is that Time Machine backups aren't bootable. However, you can try using an external disc drive, but I don't guarantee that it's going to work

All replies

  • mende1 Level 10 Level 10
    expertise.desktops
    Desktops

    Welcome to the Apple Support Communities

     

    It's the first time I see that an user deletes the OS X kernel by mistake. Be more careful the next time.

     

    As you made a Time Machine backup before, it's easy to recover all your files:

     

    1. Insert the Mac OS X Leopard DVD and press the C key while your computer is starting to start from the DVD.

     

    2. After the disc has started, go to Utilities menu, choose the option to restore the backup and follow the steps

  • snydjos Level 1 Level 1

    Is there a way to do it without starting from the DVD? My disk drive is broken. Will I be able to hook up an external disk drive and boot off of that? The reason I was doing all this was because I was trying to upgrade my operating system and accidentally bought a mac super drive. I found a workaround on the internet to use it with my mac book, but i accidentally deleted mach_kernel.

  • mende1 Level 10 Level 10
    expertise.desktops
    Desktops

    The problem is that Time Machine backups aren't bootable. However, you can try using an external disc drive, but I don't guarantee that it's going to work

  • snydjos Level 1 Level 1

    Hello, booting from a disk in an external drive worked just fine. thank you for your quick and appropriate response.

  • mende1 Level 10 Level 10
    expertise.desktops
    Desktops

    You are welcome

  • CR1977 Level 1 Level 1

    I did exactly the same, also with Mac OS 10.5.8 but I don't have the dvd and it's not available in apple store anymore. Can I buy snow leopard on dvd and install that the same way?

  • snydjos Level 1 Level 1

    Hey, yeah you can, I was able to boot with snow leopard and then use time machine to get everything back, although I'm not sure if everything was really gone. You might not need to use time machine, but if you have your system backed up, better safe than sorry.