If the built-in ESXi tools fail—specifically if the partition table is overwritten and vmfsPartitionGrowth cannot find valid metadata—it is time for third-party tools.
If this returns errors, you can attempt a metadata refresh or repair. However, deep-level metadata repair is risky. If you have a valid backup of the VM files, restoring from backup is often safer than attempting to repair a corrupt filesystem, as repair tools can sometimes result in file system inconsistency. vmware recover vmfs