Server machine stops are normally recovered by an Informix® server mechanism called Fast Recovery. Fast Recovery can recover Informix server data when the Informix server was not shutdown properly. This situation does not require the restore procedure, because it is performed automatically whenever you bring the Informix server to the online state.
You can back up the remaining logical log files that were not yet backed up. Then you can proceed with your regular restore procedure. Near the end of the restore procedure, you can restore logical logs from the backup.
This topic contains steps for Windows and UNIX.