ESXi 6.5, 4 TB LUN, accidentally formatted as VMFS 6 by another host. User aborted after 3 seconds.
Changing LUN parameters causes ESXi to misidentify the volume. vmfs 5 partition recovery
Complete Guide to VMFS 5 Partition Recovery VMFS 5 (Virtual Machine File System) is a core component of VMware vSphere environments. A lost or corrupted VMFS 5 partition can crash multiple virtual machines (VMs) instantly. 🛠️ Common Causes of VMFS 5 Partition Loss ESXi 6
Extracts virtual disks directly to external storage without an ESXi host. 4 TB LUN
Do not force a re-sign unless you are certain no other hosts are accessing the data. Step 4: Repair the Partition Table
If the partition table itself is deleted or corrupted, the "Head" of the VMFS volume is missing: