# Deleting all arrays

Note: This action is supported on the integrated RAID controller in startable-CD mode only.

Use this action to delete all the arrays that are subobjects of a specified controller.

For some operating systems, deleting an array and its associated logical drives might change the drive-letter assignments of the remaining drives when you restart the system.

Attention: If you delete all arrays associated with the controller, all data on the controller is destroyed.

1. In the tree, click (controller) or (arrays).
   Attention: Before proceeding, ensure that you have backed up any data and programs that you want to save.
2. Right-click Delete all arrays.
3. Click Yes to confirm the delete.

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