Okay, got this puppy into verbose mode, couple of things stand out
""running fsck on the boot volume...
** /dev/rdisk0s2 (NO WRITE)",
 "dubious permissions on file (skipping): System/Library/LaunchDaemons"
then it holds, cursor not blinking, looks like a freeze. Gotta leave the
house in about 15 minutes, will let it hold for a bit.

On Wed, Mar 28, 2012 at 6:43 PM, Christopher Bischoff
<[email protected]>wrote:

> I've got a time machine backup that may or may not have the corrupted
> permissions thing, so all is not lost. Funny thing, I posted the last from
> a coffee shop, the iMac unplugged at the house. For several hours, just
> like I did last night. Just went downstairs and plugged it in, hit the
> power and I'm booted to the Apple logo and spinning circle. Going to let it
> do that for a bit and see what happens. Slightly encouraged.
>
>
> On Wed, Mar 28, 2012 at 5:11 PM, richardsan <[email protected]> wrote:
>
>> re: new iMacs....i liked using shower wall cups to pop the screens off
>> 'em..kinda cool...in a crude way...;  ^) peel back the foil watch those
>> tiny wires and bob's your uncle!
>> what about target disk mode, got something else to try booting with a
>> firewire cable attached?
>> that's all i got, not mentioned... and yer not 'telling' us you don't
>> have an external that you're backing up to...regularly, right?...;  ^)
>>
>>
>> On Wed, Mar 28, 2012 at 3:46 PM, Christopher Bischoff <
>> [email protected]> wrote:
>>
>>> On Wed, Mar 28, 2012 at 3:35 PM, Bruce Johnson <
>>> [email protected]> wrote:
>>>
>>>>
>>>> On Mar 28, 2012, at 1:22 PM, Christopher Bischoff wrote:
>>>>
>>>> > Urg. Late 2010? Alum iMac, Lion, THREE WEEKS OUT OF WARRANTY. Started
>>>> getting various permission errors right after pasting a custom icon for the
>>>> HD, Disk Utility tried to fix, over and over, appeared that it was unable
>>>> to write changes to the disk. Various reboots, suddenly the white screen,
>>>> no Apple logo, nadda. I don't think I can hear the HD spin up, but this was
>>>> always a quiet machine. PRAM zapped, unplugged, same bad result. None of
>>>> the key combos have any effect, tried two different KBs, doesn't recognize
>>>> any DVDs in the drive. Did some looking, will try to build a bootable Lion
>>>> drive later in the week but I've got a bad feeling about this. Looked at
>>>> what goes into swapping out a HD, don't think so, I miss beige. End of 
>>>> vent.
>>>>
>>>> What happens if you boot whilst holding down command-V? (verbose mode,
>>>> might get an idea of where the failure is occuring Command-S? Can you boot
>>>> from an external drive? Does sound like a foo HDD.
>>>>
>>>> You're right that iFixit guide does look moderately hairy. Easier than
>>>> working on a lampshade G4 iMac...I'm 1 for 3 on those, won't touch one now.
>>>>
>>>> Hey Bruce,
>>>
>>> None of the Command start-up combos has any effect, thought it might
>>> have been a problem with the Logitech KB, swapped it out for the original
>>> KB, nothing, but thanks. External HD is next try, bit of a pain (for me)
>>> because this shipped with Leopard and was upgraded to Lion, so it doesn't
>>> (or didn't when I was able to boot that far) use the shipped system disk to
>>> boot from. Fixing Lion is new to me, but I've got this:
>>>
>>> http://www.macworld.com/article/1161069/make_a_bootable_lion_installer.html
>>> so all is not lost...yet. 1 for three, ouch.
>>>
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>>
>>
>>
>> --
>> knowledge and wisdom come from knowing a ""republican conservative"" is
>> an oxymoron.
>>
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>
>

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