macOS Encryption - FileVault Recovery

Summary

This article explains what to do if you see a screen on a Middlebury-issued Mac computer that asks for a recovery key in order to log in.

Body

Scenario: I'm unable to log into the Mac computer issued by Middlebury for my primary use. What do I do?

 

Username

The log-in username for most Mac computers is your full Middlebury email address. However, if your Mac was distributed prior to 2020, your device may require your username only (i.e., username from username@middlebury.edu).

 

Password

Your computer account is local to your Mac—that is to say, although your username may be your email address, your computer password is not synced with your email account password, and thus the two passwords may not be the same. Thus, if you change your email password, this will NOT change your computer password, and the same vice-versa. 

If you have forgotten your Mac password, you may need to reset your password. A password reset requires either 1) credentials to an Apple ID associated with the computer, 2) access to another account with Administrator permissions, or 3) the FileVault Recovery Key for the Mac. If you need a recovery key, please see Encryption & recovery below. 

For more information, see Apple's If you've forgotten your Mac login password.

 

Encryption & recovery

About 

FileVault encryption protects data on hard drives from prying eyes.  Physical access to a computer without encryption enabled may allow access to private and sensitive data, including data protected by statute.  Recovery is a state sometimes encountered with computers that are encrypted.  Understanding the most common causes and solutions may help you avoid or fix such problems.  For more information, see Apple's Protect data on your Mac with FileVault

 

Recovery causes

Changes to hardware are the most common reason for a recovery screen to appear, e.g., plugging into or unplugging from a USB drive, docking station, or CD/DVD.  Running a laptop battery down while the computer is asleep may also cause the recovery screen—please allow the battery to charge to at least 30%, else you may see repeat recovery screens. 

First, make sure your laptop battery has had time to recharge. Then, try disconnecting all cords and devices from the computer (except for power) and see if the issue goes away on its own. If it does not, try the recovery key. Finally, try reconnecting any hardware that was in use when the computer last booted normally. 

 

Recovery keys

A FileVault recovery key is a string of letters and numbers.  It may change after being accessed and used.  It should NOT be stored with a computer.  It is intended for use only in case of emergency.  

Middlebury sets up storage for recovery keys on your behalf—you will need Helpdesk staff assistance to retrieve a recovery key for a Mac managed by Middlebury. Please find and supply the Middlebury/MIIS number on the sticker of the computer, then visit our physical walk-in, Zoom, or open a ticket; you will need to bring the computer if coming in person, or be in front of the computer if calling/Zoom. 

 

Details

Details

Article ID: 573
Created
Fri 2/3/23 10:56 AM
Modified
Tue 9/9/25 2:55 PM

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