RESTORE unable to write to file '%1'

Item Value
SQLCODE -718
Constant SQLE_RESTORE_UNABLE_TO_WRITE
SQLSTATE WB009
Sybase error code 13727
ODBC 2 State ERROR
ODBC 3 State ERROR
Parameter 1 File name of database file.

Probable cause 

RESTORE was unable to write to one of the database files.