esxcfg-datastore -u "DatastoreName" Run check only (read-only):
df -h | grep vmfs a) Rescan storage adapter From ESXi shell: recover vmfs datastore esxi 5
partedUtil get /dev/disks/naa.YOUR_DISK_ID Look for VMFS partition type ( FB ). If partition table lost, recreate first partition starting at sector 128 (typical) or 2048 with VMFS type: recover vmfs datastore esxi 5
ls /vmfs/devices/disks/ Check if VMFS volume is mounted: recover vmfs datastore esxi 5