I updated to 10.6.6 on a 20" imac,and now it won't fully boot up. I get the spinning wheel, with the light Blue background, and then it shuts down without fully-booting. I have a daily Super Duper backup,but I can't get to the regular desktop. I dis-connected the printer and external drive,but it wont fully boot,and shuts itself down. Any suggestions on what to do next? Any help would be appreciated. The update went fine on my MacBook Pro;the same procedures were followed.
Sounds like your OS had a small issue that turned into a larger one after the update. Did you run Disk Utility > Repair Permissions before the update? Had you experienced any odd/strange software issues over the last few weeks?
The fact that it makes it to the blue screen makes me believe the OS is failing during the Startup process. You may want to attempt to boot from your 10.6 install disk and Verify/Repair Disk via Disk Utility. Restart when finished and let us know what happens. You may only need and Archive and Install of 10.6 to get back up and running.
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I started from the Snow Leopard Disc,and tried to repair the HD,but it couldn't be repaired. Thank God I have been doing a daily Super Duper backup! I erased the internal drive,booted from the external one, and am currently cloning it back to the internal drive. So far,so good. I'll report back after the cloning is finished,and I re-boot from the internal HD. Thanks to MacGroup and others for stressing Backups (cloning AND Time Machine!)
Thanks Dave,I appreciate your help and quick response. All seems well. After erasing and repairing the iMac's internal HD,it said,"the disk appears to be ok". Do you suggest any other disc-maintenance or precautions? Do you normally wait a few days/weeks before you upgrade? Thank you.