Recovering from Data File Corruption
The "MetaStock" data format is a delicate one that is subject to file corruption, some causes of which are discussed here.
The best way to insure against potential corruption is to perform regular back-ups of your data folders with a Back-Up utility.
However, Windows also has its own built-in "System Protection" which you can use as a fall-back.
If you notice that a data folder has become corrupted, simply right-click on that folder, select "Restore previous versions" and then choose an earlier-dated version to restore.
Click here for an illustration
Windows System Protection should be enabled by default for your c: drive.
If your data is kept on another drive, such as the d: drive, configure System Protection to cover that drive by accessing System > System Protection from the Windows Control Panel.
What to do after Restoring a Data Folder
If you restore an entire database, either from a back-up or from a Windows System Protection restore point, the corresponding updating program will "know" where to update from.
For instance, if you restore the entire "ASX" folder, or the entire "Forex" folder, or the entire "Futures" folder, the next update will proceed from the last record date in the database.
However, if you selectively restore a data sub-folder, you will need to force the updating program to "go back" and catch-up on the missing data. To force a catch-up -
- In Premium Data, click the Maintenance tab and select the appropriate date from which to do a "Re-Distribute".
- In DataTools, on the update page, set back the "Date of Last Update" to the appropriate date. Make sure that "Update all days from this date" is selected and then click "Update".
Installing a fresh Data History
If no sound back-up can be found to restore, you can always install a fresh history by obtaining the relevant history installer from our Downloads area.
Notes on history re-installation are available here.