Situation: I have an NT 4 SP6a server running SQL and Exchange 5.5 that until now has ran fine, due to a long out of hours power failure the UPS discharged and the server shut down. There are no errors reported in the event log and no data has been lost, however drive c:\ now reports itself as a FAT16 format. The NT Convert command will not read the drive as FAT16 and prompts to format the disk instead, the server works fine however for security reason the drive needs to be converted back toNTFS. Any Ideas anyone?