"Constant Boot Loop predicament" için yanıtNow the following comments only pertain to my mid-2011 21.5 inch i5 2.5ghz iMac which I purchased. It had an OEM hard drive failure that had occurred and I put a Samsung 850 pro SSD inside the iMac with a OWC thermal cable bypass to keep the fans from blaring at 6500 RPM. The previous owner was trying to update the old hard drive to 10.7.5 and the installation failed so he erased the hard drive try to reinstall 10.7.5 as a raw install not knowing that it need a 10.6.7. So I have been troubleshooting this iMac since and I will list the steps below. Now I have done the FSCHK disk dev0s2 in single-user mode three pass. I have also done all verify disc and repair permissions. I have reinstalled and ran OS X update for OS X 10.6/10.6.6/10.6.7/10.6.8 and 10.7.5 and none of the OS X installers carry the correct boot.efi, smc, or startup cache file extensions. I have remove the hard drive internally and installed it externally and via FireWire (target-disk mode) on two other MacBooks (white OS X 10.6.8 installed...
"Constant Boot Loop predicament" için yanıtI am having the same issue, except in verbose mode It Never gets past the Loading Drivers.. Loading System\Library\Caches\com.apple.kext\caches\startup\extensions.mkext... 2011 Mid iMac 21.7 inch, removed all ram, loaded 10 different sticks, 3 beeps only after "Option" startup from my Snow Leopard OEM Apple installer disk. I swapped HDD's, everything, and won't go into recovery, safe boot, nothing.