Customer is unable to delete disk partition trough disk management tool.
All Idea Systems
If the customer could not delete partitions from disk management, you can follow the steps below to delete the partition.
1. Open the command prompt and type "diskpart".
2. After the launch of diskpart, write in the diskpart window "list volume".
3. In results, choose the partition which you want to delete with select volume "x" and type delete volume. If you receive an error type "delete volume override". Type "exit" and restart pc.