alter database dbname set offline with rollback immediate

alter database dbname set online

Msg 5120, Level 16, State 101, Line 1
Unable to open the physical file "dbpath.mdf". Operating system error 2: "2(failed to retrieve text for this error. Reason: 15105)".
File activation failure. The physical file name "dbpath_1.ldf" may be incorrect.
Msg 945, Level 14, State 2, Line 1
Database 'NOES' cannot be opened due to inaccessible files or insufficient memory or disk space.  See the SQL Server errorlog for details.
Msg 5069, Level 16, State 1, Line 1
ALTER DATABASE statement failed.