I am unable to open gdb file in arcgis 9.3,9.3.1,10.0--- the gdb was given in a pen drive and was copied onto server. None of the gdb is opening, files with extension .gdb exist in windows explorer but in arcgis it is not detecting any gdb.
If ArcGIS does not regognize the directory as a file geodatabase, then the copy process has corrupted the data. The safest way to transport file geodatabases is probably as a zip archive, which will make sure all the files are there and that they have passed checksum on restoration. In my experience, 7-zip is *much* faster at compressing and decompressing zip files than native Windows capabilities. - V