I installed ESXi 5.5 on my test box and discovered to my surprise that, unlike in prior releases, ESXi did not automatically reformat all attached disks into datastores. Next, when I tried to create a datastore manually, I got a "Call "HostStorageSystem.ComputeDiskPartitionInfo" for object "storageSystem" on ESXi failed" error, which has me wondering - is this a new feature/change in behavior, or is it simply a bug in 5.5?