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Mac won't boot - even into single user mode

Posted on 2006-06-13
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Last Modified: 2013-11-17
I have a Mac at our office that won't boot - I don't even see the progress indicator, I just see the gray screen with the Apple Logo, however it doesn't get any further than that.  I tried booting into safe mode, and it boot successfully.  I've disabled all of the start up items, I've disabled all of the fonts with the exception of the system fonts, and I've also removed the "Extensions.mkext" and "Extensions.kextcache" files.  

The machine still won't boot!! I can hear the hard drive turning which is a good thing.  I've also tried to boot in single user mode to try and do an fsck -fy, but the machine won't boot into single user mode either.

I've tried reparing disk permissions as well, no luck there.

I've also booted from the OS X installer DVD, and ran Disk Utility to verify the disk and repair it - I simply got a "This disk could not be repaired" message.

What gives?!?!?!  Can anyone help me troubleshoot further?  Is the drive just fried?  Would the drive allow me to boot at all if it was damaged?
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Question by:jpipitone
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brettmjohnson earned 250 total points
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Try booting in verbose mode [hold down CMD-V at boot time].  This will display progress messages on the screen during the boot process.  The problem service is almost always the last thing you see displayed before it hangs.
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by:jpipitone
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cool i'll give that a shot....
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by:jpipitone
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won't boot into single user mode or verbose mode - doing both cmd-s and cmd-v at boot.
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by:brettmjohnson
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> won't boot into single user mode or verbose mode - doing both cmd-s and cmd-v at boot.

As expected.  However what was the last thing verbose mode displayed on the console before hanging?
This is the service that is failing.


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by:jpipitone
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nothing - its as if i'm not even holding down the keys.  it never goes to a console, just right to the gray screen with the apple logo.
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by:brettmjohnson
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> nothing - its as if i'm not even holding down the keys.  it never goes to a console, just right to the gray screen with the apple logo.

It sounds like you are waiting too long before hitting CMD-v.  You are using the command key (the one with the apple icon and 'clover leaf' icon)?



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by:imacgouf
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Hi,

Try putting your unbootable Mac in Target Disk Mode

Press the T key when starting your Mac till a FireWire logo appears
In this mode, your mac acts as an external firewire drive which can be connected to another mac for diagnostic and recovery of data..

This works even when your drive is unbootable.
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by:jpipitone
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Nevermind I fixed it.  thanks for your help anyways guys.
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