MacOS – Mac OS X Lion to mountain lion upgrade failed “NO Recovery”

macosrecoveryupgrade

I'm trying to upgrade from OS X Lion 10.7.5 to Mountain Lion. The installation failed with a message stated something about "no recovery" and a link to Apple site with Recovery update. I downloaded the update, but it could not run. Currently, my system is not at the state it was before I started the whole thing. For example, Safari, Disk Utilities, Startup Disk, Security (firewall setting tool), etc. could not start. Also, I used to connect to a NAS smb drive, but it does not show up now. Some other third party apps still work fine, Firefox, etc.

Apparently the upgrade process did not do a rollback when it failed.

So, what are my options?

Edit: I found this article http://support.apple.com/kb/HT4718 that shows you how to fix this. But it requires the use of Disk Utilities to create an external recovery partition but my Disk Utilities currently would not run.

Best Answer

Have you attempted to boot into safe mode and run the recovery update in safe mode?

You can boot into safe mode by holding down the left shift key.

Full details here: http://support.apple.com/kb/ht1455

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