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Why does Mac OS X fail to install?

21.5 inch Mid 2011 iMac

In an effort to make the computer brand new, I decided to reinstall Lion. After a quick Google, I erased the hard drive using Disk Utility & restarted in Recovery Mode. I clicked the "Reinstall Mac OS X" option and agreed to the terms, and chose destination to install. It then downloaded a fresh copy of Lion and rebooted to the Mac OS X Installer. Less than a minute into the installation an error pops up:

"Mac OS X could not be installed on you computer.

Mac OS X can't be installed on the disk Macintosh HD, because a recovery system can't be created. Visit http://www.apple.com/support/no-recovery to learn more.

Click Restart to restart you computer and try installing again."

I've retried at least a dozen times with the same results. I know there is a solution out there, but it has evaded me for the past two weeks. Any advice would be appreciated more than you can imagine.

Beantwoord! Bekijk het antwoord Dit probleem heb ik ook

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Try installing a 10.6 system from your original system installation disk, do the updates to 10.6.8 then install Lion and update again.

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Check with Disk Utilities to see if you've formatted the drive GUID. Still failing? Do a reformat using the "write zeros" option to map out any bad blocks. This failing, your machine may still be under warranty, get a replacement drive. You are using the original hard drive, correct?

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I had this same issue. I fixed it by booting into internet recovery mode (Cmd+Option+R) and then opening Terminal from the file menu and using diskutil to delete the highest level Logical Volume Group as shown here Erasing a FileVault 2-encrypted Volume -- Then closed Terminal and opened the Disk Utility GUI tool. Created a new partition. Closed Disk Utility and then ran the install again and it worked!

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Matt good find!

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It sounds like your boot table is corrupted. Have you run Disk Utility and reformatted the drive with the Mac OS Extended journaled format?

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When i try to partition the hard drive, it fails with the error: Couldn't unmount disk.

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You may try a third party format tool to see if it can fix the drive otherwise it sounds like the disk is bad

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Every time I hold cmd+Option+R it tries to do an internet recover and does the whole process again

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Bastian zal eeuwig dankbaar zijn.
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