Replaced faulty hard drive now can't boot from Snow Leopard.

Hi there,
As it says I replaced my internal WD 250gb drive in my late 2006 2.16ghz imac . I followed the tutorials on the net to the tee yet upon trying to boot from Snow Leopard after firing it back up all I get is the Apple logo and the timer . I've tried holding C to no avail . I've held Alt to select the OSX disc yet it still won't boot to get me to Disc Utility . I've even put the old hard drive back in . When I hold Alt on start up it shows the drive and the disc but will boot from neither when selected . I've tried to get the Snow Leopard disc to eject so I can try my originals but it won't even do that . I'm convinced I haven't damaged anything but I'm at my wits end ! Does anybody have any ideas how to get the Leopard disc out so I can at least try from my originals ? The drive I've installed is compatible it's a 1tb WD . I also triple checked all the connections and they all seam sound . Really appreciate your help lads as I wanted to give the iMac to my daughter when we get a new one .

You will first need to prep the new drive using Disk Utility on the original 10.4 Disc or Retail upgrade 10.6 DVD. It needs to be Partition GUID Partition Table and Format it Mac OS Extented (Journaled) before you can install and run OS X on it.
1. Boot from your SL install DVD or Bootable Clone and open Disk Utility.
2. Highlight the new HD in the list of drives and select the Partition tab.
3. Under Volume Scheme select 1 Partition and click on the Options... button.
4. Select GUID Partition Table in the drop down window and click OK.
5. Set the Format to Mac OS Extended (Journaled) and click the Apply button.
6. Once thats done, then you can do a clean Install, Restore from TM or a Bootable Clone.

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Battery Installed: Yes
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Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 15
Dynamic Power Step: Yes
Reduce Processor Speed: No
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On LAN: Yes
Wake On Modem Ring: Yes
Display Sleep Uses Dim: Yes
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Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 5
Dynamic Power Step: No
Reduce Processor Speed: Yes
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On Modem Ring: No
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Hardware Configuration:
Clamshell Closed: No
UPS Installed: No
AC Charger Information:
AC Charger (Watts): 26
Connected: Yes
Charging: No
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Thanks a bunch!!!

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Startup your Mac while holding down the Option key. That should launch the Startup Manager window where you can select the startup disk then click Restart.
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Hey guys
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I already knew that I'm free to follow my own course, but thanks for giving me your permission (???)
And would knowing the original OS of the machine make any difference in your "advice"? If it was originally Leopard, would that make it any different than if it was Tiger? Answer: No, because you don't understand the problem, and you don't know how to fix it.
Thanks.
If anyone ACTUALLY KNOWS anything about this problem, please post, as many others will benefit.
If you DON'T ACTUALLY KNOW anything about the problem, either DON'T POST HERE, or else qualify your information to indicate that you are guessing. I'm open to suggestions and speculation, but could you please CHECK YOUR EGO AT THE DOOR, and tell people that you are GUESSING what the problem might be. You don't need to act like you are some great authority and try to make your random guesswork look like an established fact.
If you were walking in New York City, and you ask someone how to get to Carnegie Hall, but the person doesn't even know where Carnegie Hall is, would you rather:
1) Have the person tell you a bunch of random wrong information that could cause you wander aimlessly for hours?
OR
2) Have the person politely tell you they don't know where Carnegie Hall is, and that you should ask someone else?
IF YOU DON'T KNOW THE ANSWER, THEN DON'T ANSWER.
OR IF YOU ARE GUESSING OR MAKING A SUGGESTION, THEN QUALIFY YOUR STATEMENTS SO PEOPLE KNOW YOUR LEVEL OF UNDERSTANDING.
YOU DON'T HELP BY GIVING WRONG INFORMATION. YOU DON'T HELP BY STATING YOUR GUESSWORK AS A FACT.
Why do people not have the slightest amount of common sense here? Are you getting paid to just post random wrong info here or something?

I had to replace my hard drive and can't get my Photoshop CS2 9.0.2 to activate. I have tried both the phone and the website and have both the serial number

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Intertech Design wrote:
Where do I get the specially assigned serial number????? I don't want to have to purchase anything since I already bought the CS2 and I don't need a newer version.
Follow the prompts at the link provided by Ned.
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Boot up from your Snow Leopard Install DVD while holding down the "c" key.
Select the language you wish to use, and then choose "Disk Utility" from the menu bar.
Your HD should appear in a panel on the left hand side of the window which opens. Select it and then click on the "repair disk" button in the right hand section of the window.
If Disk First aid is unable to complete the repair you will need to use a stronger 3rd party utility like DiskWarrior or TechTool Pro.
Once this process has been completed restart your computer.
Utilities & info regarding checking your HD space:
Where did my Disk Space go?
Slimming your hard drive
Seven ways to free up drive space
OmniDiskSweeper is a free utility that checks HD space.
FreeSpace cost $1 or is a free utility that checks HD space.
SpaceControl is a free utility that checks HD space.
Disk Inventory X
WhatSize
SpaceControl

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I have a Seagate 2TB external hard drive with 3 partitions, one for Snow Leopard - my computer has Lion. I cannot seem to boot from this hard drive but I could yesterday. Any ideas?

Didnt help. The night I asked this question I was able to reboot from the external hard drive after running Disk repair (which said everything was fine). Tonight I have tried again and cannot boot from the external. So I tried the Safe Mode restart and then chose restart with the option key held down as well as shutting down and trying holding down the option key while turning on the power. I have never been able to reboot just choosing restart and holding down the option key. Whenever the reboot from the external has worked I've had to shut down and hold the option key while turning the power on. Now that is not working. My computer is brand new as is the hard drive. I don't know where to go from here.
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@Steve Holton: Sorry Steve, but you're wrong about that one . I'm using 10.8 (purchased and downloaded) on the internal HD of this MBP8,3 (2.2 GHz, 17"), and I am also able to boot into 10.7.4 and 10.6.8 from external FW800 partitions.
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Yes

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melodymrh wrote:
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Replaced faulty hard drive now can't boot from Snow Leopard.

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