When you adopt a computer, you are telling the desktop to assume the computer ID of another other desktop installation. As a result, the desktop takes on the settings, backup file selection and backup archive(s) of the computer that is adopted. Adopt when you've done either of the following and you do not want to re-start your backup from the beginning:
Reformatted or replaced your computer's hard drive
Moved to a new computer
BEFORE YOU ADOPT make sure that you first move or restore your files to the computer, they will need to have the exact filename and folder structure, as they will be erased from the backup archive.
ALL FILES WHICH YOU UNSELECT FROM CRASHPLAN WILL BE ERASED FROM THE BACKUP ARCHIVE, NO MATTER WHAT THE RETENTION OPTIONS SET IN CRASHPLAN ARE.
Install the CrashPlan PROe desktop software from www.ceejay.com
Sign in with your username and password
Move or restore your files to the computer
On the Backup screen, choose Adopt A Computer
Choose the computer to adopt
The desktop stores your computer's ID in a text file named .identity. The .identity file containing the computer ID is preserved when you uninstall and reinstall the desktop.
If there is no .identity file when you install and you sign in as a user with one or more computers, the Adopt A Computer message displays, giving you the option to adopt the computer ID of one of your other computers.
Generally, when you upgrade your operating system without reformatting your hard drive, the .identity file remains intact. You will not see the Adopt A Computer dialog when you log in. Adoption is not required.
If you've moved your entire user account with Mac's Migration Assistant or have cloned your system, the old computer's ID may be brought over to the new computer. You are not presented with the Adopt A Computer dialog if the computer ID is transferred.