A virtual machine was migrated to a new datastore and now the drives are unavailable. When connected into the virutal machine and you access disk management (machine is a 2003 SQL server) the drives required to be initialized. After drives were initialized assigned a drive letter, drive is unable to be browsed. I had something like this occur months back and it ended up requiring a rebuild. Hopefully I can avoid that and would like to try and identify why this is happening.