RESTORE unable to write to file '%1'

Error constant SQLE_RESTORE_UNABLE_TO_WRITE
ODBC 2 State ERROR
ODBC 3 State ERROR
Parameter 1 File name of database file.
Severity 21
SQLCODE –718
SQLSTATE WB009
Sybase error code 13727
Probable cause

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