Cannot install leopard, keeps restart

Hi, I recently purchased a macbook pro. It works perfect, but I just want to re-install leopard however it doesn't let me do it.
When I try to press and hold C, it keeps restarting. "D" Hardware test works though and it doesn't find any problem. I have tried 3 different leopard cd's and all same problem.
Any solution?
Thanks...

korro wrote:
Hi, I recently purchased a macbook pro. It works perfect, but I just want to re-install leopard however it doesn't let me do it.
When I try to press and hold C, it keeps restarting. "D" Hardware test works though and it doesn't find any problem. I have tried 3 different leopard cd's and all same problem.
Only the DVD that came with the computer will work. DVDs from other machines will not work, and, since your machine is new, even a recent commercial DVD may not work if it was released before the production date of your machine.
It's also possible that your optical drive is not working properly.
Try resetting PRAM first - a long shot but why not?
http://support.apple.com/kb/HT1379

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After recommendation, I post my question also here:
Hello everyone,
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I use Carbon Copy Cloner from time to time to put complete replicas of my volumes onto one of my 750 GB SATA disks. These are useful because they can be easily opened to find a lost or damaged item or returned to my main disk as a bootable volume. However, now that all the bugs have been removed, most people will find Time Machine much simpler to use.
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the install DVD has a program checking your computer minimum requirements so it won't let you install on a 733MHz machine. However, there are some hacks to go around the issue. If you are really curious you can try them. Basically, the idea is to make a copy of the install DVD on a separate hard drive, manually change one line of code in the xml file that lists the min requirements and install Leopard from that hard drive.
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mahem4DUB wrote:
so i am currently building a PowerMac G4 (graphite) Dual 450mhz
A Dual450MHz is not supported for a Leopard install. You need 867MHz or higher to run it the way it was meant to be.
but when i connect a 60gb hard drive that i formatted using my time machine backup (running OSX leopard 10.5.6) it wont recognize the drive and run.
What machine is it a backup of? It has to be exactly the same build date G4 for any hope of operation. Your specs. say you have a Quicksilver. It doesn't have the correct drivers for a G4 Gigabit (you say graphite, but I believe the Dual 450MHz was a Gigabit Ethernet....I have one).
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Hi
+Do G4s have issues with seeing USB drives as startup disks?+
Yes in the sense they won't work. AFAIK PPC architecture macs will only boot from certain external firewire drives - depends on the chipset. Oxford Semiconductor is one chipset that I know that works - there are others. I'm not absolutely certain but I think it's safe to say the later Intel Macs (last year or so) will boot from external USB drives as long as they're USB 2.
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Did a verbose boot. Kept saying "runtime corruption detected on hard drive, fsck will be forced on next mount. catalog key #70 too big." Repeated that and other stuff over and over and over then finally "synching discs - killing all functions", then it restarts.

"Have you disconnected any external devices when trying to boot?"
Yes.
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No but I can probably borrow one. I'll try this last.
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Yes. It just spit the disc out without doing anything.
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It didn't give me any hardware errors.
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Did that too. It didn't do anything.
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While installing I choose to erase and install option, when it started to install it comes up with a error "The source media you are installing from is damaged. Try istalling from a different copy of the source media or contact the manufacturer for a replacment".
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How long into the install process (after you clicked install and it started installing) until you received the error?
* If it had already formatted the hard drive, then the reason you're not able to boot is because all of your previous operating system and data were erased already and you're s@#t up a creek and will have to contact Apple, tell them the steps you took, and request a new Leopard disk.
* If it simply checked the Leopard DVD and it hadn't formatted the drive or started installing, then booting off your original OSX disk (or the disk of the previous operating system you had on there) and going to "Disk Utility > First Aid > verify Disk" will tell you what the issue is. If it has errors, then try using "Repair Disk". If it fails, you're s@#t up a creek and will have to contact Apple, tell them the steps you took, and request a new Leopard disk.
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Cannot install leopard, keeps restart

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