Recovery pending means that for some reason SQL cannot run restart recovery on the database. Usually this is because the log is missing or corrupt.
"G:\Data\MSSQL\Database.mdf".
"G:\Data\MSSQL\Data\Database_log.ldf"
Do these files exist? Is the drive online and available? If so, try stopping and restarting the SQL service as it may be that SQL came up before the drive was available. That would have caused this error.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability