PowerMac G4 MDD Dual 1.42 not recognizing hard drives

I have a PowerMac G4 MDD Dual 1.42 GHz, and I just moved across country, and it was working before the move, now it won't start up. It goes right to a grey screen with a blinking question mark and finder icon. I have 2 hard drives in it. One with Leopard, and the other with Tiger, and it won't recognize either. I reset the PRAM, I checked all the connections inside, started it up holding the option key and it doesn't show either hard drive. I also started it up with the Leopard install disc and using Disk Utility it still couldn't find the drives! Next thing I am going to try is resetting the PMU and see if that works...otherwise both hard drives went bad or possibly the cable for both of them went bad??

operati0n69er wrote:
... I checked all the connections inside...
When you checked the cable connections, did you check both ends of all cables? For example, if the moving loosened the ATA cable at the logicboard/controller end, checking the drives' connectors won't reveal much.
Do the drives spin up when you power the machine on (you may need to open the side panel and gently touch the drives while booting to test this)? If not, suspect a power cable connection issue. If they do, suspect an ATA cable connection issue.
Best way to confirm a cable connection is sound is to undo it and redo it - they can look okay when they are not okay. Do this with the machine shut down, of course.

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http://forums.xlr8yourmac.com/action.lasso?-database=faq.fp3&-layout=FaqList&-re sponse=answer.faq.lasso&-recordID=34020&-search
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[Mac OS X: Available firmware updates for upgrading from OS9 to OSX|http://docs.info.apple.com/article.html?artnum=86117]
[Mac OS X and the Blue and White G3 Firmware Update Problem|http://lowendmac.com/lab/05/0301.html] - installing Firmware 1.1 on B&W without OS9 installed.
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[Formatting & Partitioning a Hard Drive in OS X - Tiger and Leopard|http://www.kenstone.net/fcphomepage/partitioningtiger.html]
[Journaling, Zeroing, Partitioning & OS 9 driver|http://forums.bombich.com/viewtopic.php?t=4084]
[Kappy's extensive hard drive formatting post|http://discussions.apple.com/thread.jspa?messageID=8340551&#8340551]
[BDaqua's Formatting instructions|http://discussions.apple.com/message.jspa?messageID=8901255#890125 5]
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PowerMac G4 MDD Dual 1.42 not recognizing hard drives

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