[10.7 to 10.8] Updating breaks my OS

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[10.7 to 10.8] Updating breaks my OS

Hello,

I have a mac book air 2011 with 10.7.5.

Yesterday I bought the update for 10.8 in the Apple Store but always the installation failed. I can't recovered my computer after the failure instalation and I need to use the time machine backup for revocer the environment.

Screen shot of the failure:

"Recovery system creation failed with error -69840 (File system check on boot helper partition failed)"

Thank you 🙂

MacBook Air, Mac OS X (10.7.5)

Posted on Feb 18, 2013 6:21 PM

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Answer 1

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moxilo Author

Level 1

9 points

Feb 19, 2013 12:41 AM in response to moxilo

I solved it. I have needed disable FileVault before try to install 10.8.

In other words:

I used the disk utility to format my partition without cypher, aka without FileVault.
Restore 10.7 from the time machine backup in this partition.
After that, I upgrade to 10.8.2. without any problems during the installation.
In the end, I enabled FileVault.

See you...

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