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iMAC not starting after upgrade to Mavericks

Posted on 2016-10-28
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Last Modified: 2016-11-05
Hi all,

I've upgraded an iMAC from 8GB to 16GB and have cloned the exisitng SATA hard drive (using carbo copy cloner) onto a crucial 1TB SSD which then all booted up fine. The iMAC WAS on Snow Leopard and so i downloaded and upgraded the OSx to Mavericks but now it won't boot, it just sticks on the Apple logo (no spinning circle). I have ran repair disk and repaired permissions and it's detected the SSD as the boot disk but it just sticks there.
Any ideas ?

Thanks
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Question by:gci_ee
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8 Comments
 
LVL 16

Expert Comment

by:Brian Pringle
ID: 41864461
Have you tried running a full Web recovery to put it back to factory defaults?
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LVL 30

Expert Comment

by:serialband
ID: 41864588
How old is the iMac?  What model number is it?  Some of the earlier models can't run anything beyond snow Leopard.
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Author Comment

by:gci_ee
ID: 41864938
Hi Brian,  When you say factory defaults i presume you mean wipe it ? If so then that's not possible as it's got a lot of programs on that the client can't get licence keys etc for to re-install.
I'm thinking it might be the SSD firmware ? it's brand new but seems a common problem.
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LVL 53

Expert Comment

by:strung
ID: 41865248
Your problem may be startup software that is incompatible with Mavericks. Try rebooting in safe mode by booting while holding down the shift key to prevent startup applications from loading.
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LVL 37

Expert Comment

by:bbao
ID: 41865499
I would first make sure the newly added memory is working well, then make sure the SSD is compatible and well cloned from the original disk.

if you remove the newly added memory, does the Mac boot as expected?
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Accepted Solution

by:
gci_ee earned 0 total points
ID: 41867253
Thanks all, it seems Crucial SSD's which this is aren't all compatible with Apple and certainly Mavericks, we've now put a Samsung in (cloned the failed disk that has Mavericks on) and it's working fine.
Thanks
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Author Closing Comment

by:gci_ee
ID: 41875285
Found solution
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LVL 37

Expert Comment

by:bbao
ID: 41875360
i guess i did mention SSD compatibility as a factor to be considered.
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