If you upgraded your account to use the custom encryption option, there are several additional steps to the adoption process. Specifically, you should test your data encryption key prior to adopting to ensure it is correct, because entering an incorrect data key will cause your archives to be deleted. This process assumes you have not changed operating systems.
When replacing a computer, we recommend setting up the new computer with the same user name and drive letter that you used on your previous computer. If the user name or drive letter changed, you may need to manually update your file selection so CrashPlan can synchronize with the destination and continue backing up files from the new file location.
If you are using the custom data key to encrypt your archive, testing your data encryption key prior to adopting your backup archive is a best practice. After adopting, you are prompted to enter your custom encryption key. If you enter an incorrect data key, your archives will be deleted! You can test your custom encryption key from the CrashPlan app.
Before you adopt a computer, it is important to replace all of the files you backed up previously onto the new computer. Any files you don't restore from your existing backup will be retained as deleted files and are less visible, which could lead to unintentional data loss. Additionally, if the previously backed up files are not restored to the computer before adopting it, you may have an extended wait to restore your files while CrashPlan synchronizes your device with the backup destination.
Before adopting, you can use any of the following methods to add your original files onto your new or re-built computer:
Once you have verified your custom encryption key and restored all of your data, it's time to adopt your previous computer so that CrashPlan sees your new computer as a continuation of your previous computer. When you adopt, your new computer:
If the previously backed up files are not restored to the computer before adopting, you may have an extended wait to restore your data while CrashPlan synchronizes your computer with the backup destination. Any files that cannot be found during synchronization will be flagged as "missing" and you must follow these steps to restore them.