Recover Deleted Vmfs Partition -

Here are some features that can be included in a solution to recover a deleted VMFS (Virtual Machine File System) partition:

Why? Because partition table recovery is low-risk, but one wrong command could compound the disaster. Working on an image file allows unlimited trial and error.

After updating the table, tell ESXi to rescan for volumes: vmkfstools -V 3. Automated VMFS Recovery Tools recover deleted vmfs partition

VMFS5, for example, stores its file system descriptor in the first 1 MB of the partition. The superblock magic number is 0x4B4C4E46 (ASCII "KLNF" for Kernel Linked File System? Actually, VMFS magic is often 0x5a4d4653 — "ZMFS" in little-endian). Search for these bytes using xxd or a hex editor like HxD .

esxcli storage core adapter rescan --all Here are some features that can be included

Ensure SSH is enabled on your ESXi host to allow command-line access for manual inspection. 2. Manual Recovery via ESXi Command Line

dd if=/dev/sdX of=/safe_storage/vmfs_backup.img bs=1M status=progress After updating the table, tell ESXi to rescan

Once the partition table entry is restored, VMware ESXi still may not recognize it immediately. Rescan the storage adapter:

These tools often cost a few hundred dollars—cheap compared to losing business-critical VMs.

If the partition reappears but shows as "Not a valid VMFS volume," check the partition ID. ESXi requires the partition type to be 0xFB . Use fdisk -l from the ESXi shell (if you have it enabled) to verify.