IMac Core 2 Duo unable to read 10.5 install disk

Hey all,
My father has an iMac Core 2 Duo that shipped with 10.4. Later I installed 10.5 on it, and was running it using an external drive as the Time Machine backup. All was fine, until his HD crashed a few weeks ago.
It was out of warranty, so they brought it to Not-So Best Buy, and them put in a new HD and restore everything. Well, for whatever reason they didn't install 10.5 on it, but the original 10.4. As I don't have my 10.5 install disk, I went out this morning to purchase it for him.
Upon returning home, I inserted the 10.5 retain install disk and the iMac does not recognize the disk. it says it is a blank CD. In inserted it into my MacBook Pro and it recognizes the disk fine.
Is there something on the newer iMacs (newer than my Core Duo MacBook Pro) that I don't know about to try to get this disk to be read by the iMac?
When I put it into boot disk mode (holding the option key during startup) it does not se the install disk either.

It sounds like the iMac may have a bad optical drive.
Use Disk Utility on your MacBook Pro to make a 10GB partition on your external drive. Use Disk Utility's Restore feature to clone the Leopard DVD to the partition. Hook the external drive up to the iMac. See if the iMac will boot from it and allow the install to proceed.

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64 bit support on iMac Core 2 Duo under Tiger 10.4.10 ?

Hi,
everywhere I read that my iMac Core 2 Duo is supposed to support 64bit applications, or it least is "64bit ready". What does this precisely mean for Tiger? I am running 10.4.10.
The concrete problem I have is that Mathematica 6 is supposedly supporting 64bit on Intel, one just needs to rename the Kernel; a 64 bit Kernel is included. See http://support.wolfram.com/mathematica/systems/macintosh/osx/32bitratherthan64bi t.html
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Yes, this thread is older and newer....
Parts of Mac OS X 10.4 Tiger are 64-bit, and parts are not.
Per published information, a whole lot more of the Mac OS X environment is going to 64-bit; Tiger had 64-bit at the Unix level, while Leopard is expected to bring rather more to the table.
Published high-level details:
http://www.apple.com/macosx/leopard/technology/64bit.html
http://developer.apple.com/leopard/overview/
For low-level details and such related to Leopard, those are under NDA up until they're not under NDA. Mayhap clarification arrives sometime next month?
The x86-64 construct is a name for what Intel once called its EM64T extensions and what it now (in aggregate) refers to as its Intel 64 architecture. Not to be confused with IA-64, which is Itanium, nor with IA-32 which is the 32-bit x86 stuff; x86-32. AMD64 is what AMD has called its extensions, and these are compatible with Intel 64.
Yes, the Intel Core 2 processors and the Intel Xeon 5100 series processors can and do have 64-bit addressing support. But there's a whole lot more to this than the processor itself, as assumptions of the address size tend to permeate an operating system and interfaces and applications; APIs and data structures are notorious for harboring these assumptions. Run-time code can and does tend to make pointer size assumptions here, too.
"64-bit Ready" means that once the software and applications get around to it, the hardware is expected to be ready. It doesn't mean that it'll all work together flawlessly, unfortunately.
Since the makers of Mathematica have provided the bits here and it is the Mathematica bits that are reporting errors, I'd have to assume they're the best ones to look at this. Check with Mathematica.

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Hello Apple Community!
I was on the Apple website and saw Mountain Lion would be comming soon. I want a computer that can try to keep up, because Apple isn't slowing down. I currently have an eMac 1.42, and it's time to retire.
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Hello ,
I have a iMac core 2 duo 17", I want chang the HDD by my self,Cann't I? or How?

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Why reward points?(Quoted from Discussions Terms of Use.)
The reward system helps to increase community participation. When a community member gives you (or another member) a reward for providing helpful advice or a solution to their question, your accumulated points will increase your status level within the community.
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iMac Core 2 Duo 2.16GHz 2GB 24'' Desktop
Specs are:
Item specifics - Apple Desktops
Condition: Used
Processor Type: Intel Core 2 Duo
Product Family: iMac Processor Speed (per Core): 2.16 GHz
Screen Size: 24 inches Processor
Configuration: Dual Core
Operating System: Mac OS X 10.5 Leopard
Memory (RAM): 2 GB
Primary Drive: Superdrive
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I dont even know why he would need a terabyte of space.... but he is guy what can I say lol

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Regards,
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IMac "Core 2 Duo" 3.06 24-Inch (Early 2009) update from 1TB to 4TB HD

Hallo, I am new here and I give my best Regards to everybody in this Comunity.
I have a iMac "Core 2 Duo" 3.06 24-Inch (Early 2009) with 1TB HD, 8GB Ram, ATI Radeon HD 4850 and OSX 10.9.3.
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Waht I have to take care before to change it? I normally run OSX Maverik, iMovie, Final Cut Pro, Compressor and Safari.
Tank's a lot
Mike

Hi there,
Your machine should be supported, the requirements for Mountain Lion are:
iMac (Mid 2007 or newer)
MacBook (Late 2008 Aluminum, or Early 2009 or newer)
MacBook Pro (Mid/Late 2007 or newer)
Xserve (Early 2009)
MacBook Air (Late 2008 or newer)
Mac mini (Early 2009 or newer)
Mac Pro (Early 2008 or newer)
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OS X v10.6.8 or later
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Have anyone try 3GB of ram on imac core 2 duo 1.83

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thank you

thank you for that.....this help me decide eother to purchase 2gb stick or not....well i heard from some website said that when apple post the specification at that time 2 gb stick still not b on the market just yet.....
http://en.wikipedia.org/wiki/Macbook
said that late 2006 macbook is able to put 4 GB too but only 3.25 readable.....while the other ram site that selling ram for mac product also state this point i'm not pretty sure about that......
i get pretty clear that for macbook late 2006 able to run with 3 gb even though apple specification said only 2gb.....
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i really want to get the info of who experience or have try on t it.....
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Aperture does not work on iMAc core 2 Duo

is this true and is there a solution? i just purchased Aperture 3.2 from the app-store, so downgrade is no option.
iMac Core 2 Duo, 3.06 GHz, 8 GB RAM, early 2009.

CRASH REPORT:
Process:         Aperture [667]
Path:            /Applications/Aperture.app/Contents/MacOS/Aperture
Identifier:      com.apple.Aperture
Version:         3.2 (3.2)
Build Info:      Aperture-201088000000000~1
App Item ID:     408981426
App External ID: 4372644
Code Type:       X86-64 (Native)
Parent Process: launchd [130]
Date/Time:       2011-10-20 21:23:47.680 +0200
OS Version:      Mac OS X 10.7.2 (11C74)
Report Version: 9
Interval Since Last Report:          77957 sec
Crashes Since Last Report:           53
Per-App Interval Since Last Report: 206 sec
Per-App Crashes Since Last Report:   52
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Regions Near 0:
-->
    __TEXT                 0000000100000000-000000010078c000 [ 7728K] r-x/rwx SM=COW /Applications/Aperture.app/Contents/MacOS/Aperture
Application Specific Information:
objc[667]: garbage collection is OFF

IMac Core 2 Duo unable to read 10.5 install disk

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