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You are here: MacNN Forums > Software - Troubleshooting and Discussion > Mac OS X > Can't install 10.6 on iMac

Can't install 10.6 on iMac
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Mac Elite
Join Date: Aug 2001
Location: London, Ontario
Status: Offline
Oct 8, 2010, 10:29 AM
 
I also posted this on the iMac section because I suspect it is more of an iMac problem. But maybe someone who doesn't read that section will have any ideas. I am totally at a loss as to how to proceed.

I bought the Snow Leopard disk about a week ago to install on my 17" iMac (2ghz Core2Duo, 3gb RAM). First I tried to do an upgrade from the Leopard that was already working on the machine (10.5.8). No go:

Yellow exclamation point about 5 minutes into the install. "Install failed. Mac OS X could not be installed on your computer. The installer could not copy the necessary support files."

Since then I have done the following (pretty much in the following order):
1. Called Apple and they sent me a new Snow Leopard disk. Same result.
2. Talked to local Apple store who said it was almost certainly a DVD drive problem.
3. Tried installing from an external USB DVD drive. No luck.
4. Reset PRAM. No luck.
5. Erased and reformatted the hard drive (disk utility from the Snow Leopard disk). MacOS/Journalling/GUID, one partition. Zeroed the drive. Still no luck from the internal DVD drive.
6. Used my MacBook Pro (i5) as an external firewire target disk. As before, iMac initially booted from the 10.6.3 disk, got through about 5 minutes, no luck.

Keep getting the same message. I am totally mystified. Any suggestions.
     
WizOSX  (op)
Mac Elite
Join Date: Aug 2001
Location: London, Ontario
Status: Offline
Oct 8, 2010, 04:56 PM
 
I did get 10.6.3 working on the iMac using the iMac as the target disk. Actually, I had tried this yesterday but the MacBook Pro would not boot from the 10.6.3 retail disk. So I just located the original disk that came with the MacBook Pro. It is also 10.6.3 but the machine did boot from it. Since they are both 10.6.3, I have no idea why the MacBook Pro would not boot from the retail disk. Maybe Apple only folds machine specifics in at the next update. If so this is annoying because if I'd waited a bit and gotten a 10.6.4 retail disk I would assume it would boot the MacBook Pro. Anyone have any thoughts on this?

Another weird thing: The icon for the hard drive is not on the desktop. I can see it if I open finder from the dock and access it that way.

So it seems that it is a faulty or weak DVD drive--but then why wouldn't it work from an external DVD drive?
     
Moderator
Join Date: Apr 2005
Location: Cambridge, UK
Status: Offline
Oct 8, 2010, 05:01 PM
 
You've been here long enough to know that cross posting is a no-no.
     
   
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