VMWARE Failed to expand VMFS datastore datastore1 - Cannot change the host configuration.

When you found this error message, after exten VMware DATATORE !!
"Failed to expand VMFS datastore datastore1 - Cannot change the host configuration."

TOPIC : Expanding Local Datastore in vSphere ESXi (2002461)
Purpose
This article provides information on how to expand a local datastore which also happens to be the boot location of the ESXi host. This is achieved by growing an existing VMFS Datastore in a Primary partition to fill the adjacent available space on the local boot device.

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