This is when I started having issues with booting into my iMac, but even removing rEFIt and re-initializing my internal hard drive has not resolved the issue.ĭoes anyone have any suggestions? Is there anything else I can do to fix my iMac? TIA. Then a few days ago I decided to try reinstalling rEFIt (I should have probably used rEFInd instead, but rEFIt had worked previously for me, so that is why I had tried to use it again).
DISKWARRIOR 4.4 YOSEMITE MAC OS X
At some time later I removed rEFIt and installed Mac OS X Mavericks, which worked without a problem. At that time I think I had Mac OS X Lion installed. I put the firmware restoration CD into my DVD, but the screen remains blank.Ī year or two ago I had installed rEFIt on my Mac and had it successfully booting to various devices. I don't see the 3 quick blinks followed by 3 slow blinks then 3 quick blinks of any LED or tones, but instead hear one long tone and the computer starts up.
DISKWARRIOR 4.4 YOSEMITE PRO
Boot using Tech Tool Pro DVD by holding C.Boot using Disk Warrior 4.4 DVD by holding C.Hold until system reboots at least three times, but after rebooting again the screen remains blank.
Reset parameter RAM by holding option - Command - P - R.Boot into single user mode by holding Command - S.Attempt to choose boot device by holding option.Boot into safe mode test by holding shift.Boot using the Mac OS X Lion DVD by holding C.I think there is a problem with the firmware, because because here are steps I have taken to attempt to resolve the issue, which have not appeared to work: After rebooting it just displays a blank grey screen with no apple. Recently, I attempted to re-install Mac OS X Lion on my 2007 iMac computer (EMC 2133), but during the installation process it got interrupted.
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