Unable to create VMFS partition

On my home lab I tried to create a new VMFS volume on a RAID-0 disk set that was coming from another host. When creating the new VMFS volume from the vSphere client, the following  error appeared:

Call “HostDatastoreSystem.QueryVmfsDatastoreCreateOptions” for object “datastoresystem-9” on vCenter Server “VC01″ failed.

On the VMware ESXi 5 server I enabled “Local Tech Support Mode” (more information can be found here), so I was able to logging in directly on the console and used the fdisk-l command to see the partition information on the disk. I notice that the disk contains four old partitions from another system.

I deleted the four partitions by using the following commands (displayed in bold):

- fdisk /dev/disk/mpx.vmhba3:C0:T1:LO (see the above picture)

- p (for printing the partition information and verify that you choose the right disk)

- d and enter the partition numbers (1, 2, 3, and 4) for deleting the partition

- p to verify that all the partitions are deleted

- w to write the modifications to disk

After the deletion of the old partitions I was able to create the VMFS volume on the RAID-0 disk set.

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