# Modifying an array in the migration wizard

To add or remove drives in an array:

1. In the Physical devices view (on the right), click the drives you want the array to use. To view available segments on each disk drive, switch to the full-size capacity view or relative-size capacity view:
   Note: A segment shaded in light blue is not part of any array or logical drive.
2. To remove or replace a physical drive, click the drive you want to remove (indicated by ). Then, click the drive you want to replace it with. To cancel your changes and start over, click .
3. When you are ready to continue, click Next. The "Configuration summary" window opens.

## More information

- Understanding physical drive capacity and unusable capacity

Glossary | Contents

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