Re: ESXi4 crash/freeze -> VM shown as Unknown(invalid) in Inventory, now message appears: Cannot open the disk or one of the snapshot disks it depends on. Reason: Invalid argument.

this VM is attached to only one data store, there is another VM on the same data store which works fine

is there a way to check and repair the vmdk files ?(ESXi 4.0)

removing VM from inventory and re-register it works