This option gets information about the geometry of a virtual disk.
-g --geometry
The output is in the form: Geometry information C/H/S, where C represents the number of cylinders, H represents the number of heads, and S represents the number of sectors.
Note:
When you import virtual disks from hosted VMware products to the ESXi host, you might see a disk geometry mismatch error message. A disk geometry mismatch might also be the cause of problems loading a guest operating system or running a newly-created virtual machine.