text: **12.9.2 Rekeying using USB flash drives**
  
  During the rekey process, new keys are generated and copied to the USB flash drives. These 
  keys are then used instead of the current keys. The rekey operation fails if at least one of the 
  USB flash drives does not contain the current key. To rekey the system, you need at least 
  three USB flash drives to store the master access key copies. 
  
  After the rekey operation is complete, update all other copies of the encryption key, including 
  copies stored on other media. Take the same precautions to securely store all copies of the 
  new encryption key as when you were enabling encryption for the first time. 
  
  To rekey the master access key on USB flash drives, complete the following steps: 
  1. Click**Settings**→**Security**→**Encryption**. Click**USB Flash Drives**to expand the 
  section, as shown in Figure 12-86. 