Can you erase the hard drive in Recovery Mode with File Vault turned on?

Can you re-install OS X Mountain Lion from the recovery Drive when File Vauly 2 is turned on?

iMac, Mac OS X (10.6.7)

Posted on Jan 11, 2013 11:38 PM

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5 replies

Oct 5, 2013 8:30 AM in response to gregoryfrommissouri

You can not use the recovery drive itself to reinstall OS X, but you can reinstall OS X without de-encrypting the drive.

WARNING: following these steps will remove all data from your harddrive. This process will in all likelyness not be reversible. Use at your own risk.

1. Prepare a recovery USB stick [1].

2. Boot from this stick

3. Start Disk Utility

4. Select the hard drive

5. Select the Partition tab

6. Change Volume Scheme to 1 Partition

7. Enter Macintosh HD in the name field

8. Click Apply


Your hard drive is now empty, you can use the installer on the same USB stick to re-install a clean OS X on your machine.


[1] http://support.apple.com/kb/dl1433

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Can you erase the hard drive in Recovery Mode with File Vault turned on?

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