[[TranslatedPages]]

= Autosave =
The autosave feature stores the osm data and [wikitr:/Help/Dialog/Notes Notes] layers with modified data in regular interval in order to recover work in case of a crash.

== Recover the changes ==
* Restarting JOSM will offer to open the auto-saved files.
* Backup files can be found in the JOSM preferences folder (subfolder `autosave`), where they are stored.
 * See [wikitr:/Help/Preferences#JOSMpreferencedatacachedirectories preferences help] page on how to locate the preference folder.


== Prompt after JOSM start ==
On startup, user will be asked to restore or discard latest snapshot from autosave.
* If **''discard''** is chosen, there is **no chance to recover** work again.

[[Image(UnsavedOSMdata.png,link=)]] 


== Q&A ==
How does it know that JOSM crashed?
* It keeps backups which are deleted, whenever a data layer is closed gracefully.
 * If backup files are found on start up, JOSM will assume that it crashed.


== Preferences ==#Preferences
The preferences are described in [[JOSMImage(preferences/backup,link=,24,middle)]]  [wikitr:/Help/Preferences/BackupPreference File backup] under [[JOSMImage(preference)]] [wikitr:/Help/Action/Preferences Preferences]


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