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Thread: OS X Freezing/Crashing something about the kernel

  1. #1
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    Bowling Green, KY, USA
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    Lately I've been getting more and more system freezes in 10.1.4 with what looks like someone typing the problem on my desktop. I haven't taken the time to write it all down, but it's something about the kernel having a problem. The text is in white and highlited in black. It is completely locked up and I have to press my start button for about 5 sec to shutdown. Anyone else had this problem?

    [This message has been edited by rhunt000 (edited 08 June 2002).]

  2. #2
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    Yes, I've had this on several occaisions, when I immediately shut down classic (without thinking) after mistakenly starting it (without thinking). I think its some kind of kernal trap; gives an impression of single-user mode but I couldn't type any commands in to it...lv 'll know more for sure.

    [This message has been edited by gmidd (edited 09 June 2002).]

  3. #3
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    I wish I could help! What you're getting is a kernel panic. This is usually due to some startup file being corrupted. As to how to fix it, I don't know. I'm sure someone around here could help though.

  4. #4
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    miami, fl, usa
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    Yes. definitely a kernel panic and therefor a crash way down deep in the BSD Unix underpinnings of OSX. Best bet for troubleshooting is not unlike back with previous OS's when we would think back to the last application or device software added to the system and see if it might have installed an extension that conflicted. Could even be as simple to fix as rebuilding the desktop - although you have to reboot into OS9 in order to do this.

  5. #5
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    There was a tip on Apple's KB recent changes (I think) that might help, along with a couple other tips&tricks.

    Copying the kernel from the CD.
    http://docs.info.apple.com/article.html?artnum=106805

    6. Insert the Mac OS X Install CD.
    A window opens showing the Installer window. Close this window.
    7. Double-click the Mac OS X Install CD icon.
    8. Drag the "mach_kernel" file from the top (or root) level of the CD
    to the top (or root) level of the Mac OS X hard disk volume.
    9. Replace the existing "mach_kernel" file in that location,
    if prompted for confirmation.

    Delete the Extensions.mkext which is ~3MB and is created by the system.

    use "Boot Config" (found on Version Tracker).

    Description:
    Boot Config is an utility that lets you control a Mac OS X system's startup items. To use it, run it, and uncheck an item to disable it, check the item to enable it.

    Warning: Disabling some items may have a very, very bad impact on your system (for which the app's author will accept no responsibility). Use this utility with care and at your own risk!

    In particular, be careful with items flagged as core items. Also, if you disable a service (e.g. Apache) with Boot Config, make sure you tell the system you're not using it (e.g. turn off web sharing in System Preferences).

    I needed to use Boot Config before restarting, but after installing Norton SystemWorks 2, which installs some nasty stuff (NAV was/is fine).

    Boot with shift key down to bypass startupitems and services.
    Continue to hold down shift key passed the login point to bypass login items that are set to launch.

    Keeping a separate drive/volume with OS X backup for emergencies - might also want a 'clean' OS X 10.1 volume that has Apple updates only. You could use a disk image (2GB) to hold, and just have a 3GB scratch volume that is bootable somewhere. Carbon Copy Cloner has worked for me and is easy, reliable, to use.

    Gregory

    Some good reads:
    http://www.macosxhints.com/ http://www.OSXFAQ.com/index.ws http://www.macslash.org/ http://www.info.apple.com/usen/macosx/tshoot.html http://www.info.apple.com/kbnum/n106464 http://docs.info.apple.com/article.html?artnum=75185 http://docs.info.apple.com/article.html?artnum=106805 (mentioned above)


    [This message has been edited by Gregory (edited 10 June 2002).]

  6. #6
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    Excellent Info. I ran Drive 10 (booted from CD) and it reported problems. The fix reported an unusual number of leaves or something like that (I was in a hurry) and recommended a backup before I did a replace, so I cancelled out. I'll run it again and give more specifics. It seems to crash most often when Mail and IE 5 are open and it has been a few hours. It did it again yesterday when I tried to close a PS 7 file. I wrote everthing down on a piece of paper that came up on the screen and I'm thinking about e-mailing it to an Apple Tech person. Surely there is something in that mess that is meaningful.

  7. #7
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    I'd use Disk Utility first, boot from another OS X volume, even use Disk Warrior booted in OS 9 first, before using Drive10 unless you are on their beta list and have the latest.

    Backup some files, any cache or even if you can move stuff to another volume/drive. I had some trouble with a drive and overlapping files that Disk Warrior and Disk First Aid cleared up.

  8. #8
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    I ran DFA from OS X install disk and it also reported an invalid leaf count. Said there was a need for 36 less than the number reported. I repaired the disk so I hope that was the only problem. Thanks.

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