Review the screenshot, and then answer the question below. While attempting to reinstall OS X Mountain Lion in Recovery mode, you get the error message shown above. Your Mac is physically connected to an Ethernet network. Which tool can you use to diagnose the problem further?
If you use the Get Info window to change Sharing & Permissions settings on a file or folder, Finder preserves and can revert to the previous settings until the window is closed.
If you did not store the recovery key with Apple, and you lose the FileVault-enabled account passwords AND the recovery key, there is no way to recover user data on a FileVault-encrypted volume.
On your OS X Mountain Lion computer, you want the Finder to display filename extensions by default. How can you configure this setting from the Finder?