Adding support for mrsid and other raster data formats in geoserverPosted in geoserver by galipaydin on August 1, 2010
I recently obtained a mrsid encoded satellite image for part of Elazig region and wanted to add this as a layer on geoserver. however the original geoserver installation does not have the capability to process and show mrsid image format. so I did a bit of googling and found out that I had to install gdal libraries.
First grab a copy of The ImageIO-ext Binary Package from here ImageIO-ext and install it.
Create the gdal_data environment variable; in my case the gdal_data points to c: \ Program Files \ ImageIO-ext \ gdaldata
Then restart the geoserver and go to stores-> Add new store, And You shoshould see the new raster data formats added to the List.
From: http://galipaydin.wordpress.com/2010/08/01/adding-support-for-mrsid-and-other-raster-data-formats-in-geoserver/