Sometimes it can take a long time for ArcGIS to recognize and display all the supported raster formats. By default, only a select list is searched; however, this can be changed.
- You can access the Raster File Formats Properties dialog box from the Customize menu in the ArcGIS Desktop applications.
- In ArcMap (ArcGlobe or ArcScene), click the Customize menu, click ArcMap Options, click the Raster tab, click the Raster Dataset tab, then click File Formats.
- In ArcCatalog, click the Customize menu, click ArcCatalog Options, click the General tab, click Raster Files in the data types list, then click Properties.
- Click Search all files to find valid raster formats.
- Click OK to close each dialog box.